c8-stream-1.4
imports/c8-stream-1.4/389-ds-base-1.4.3.39-8.module+el8.10.0+22275+e4fc04d4
MSVSphere Packaging Team
2 months ago
parent
3de5850e5d
commit
1dc034d354
@ -0,0 +1,220 @@
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From 8cf981c00ae18d3efaeb10819282cd991621e9a2 Mon Sep 17 00:00:00 2001
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From: tbordaz <tbordaz@redhat.com>
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Date: Wed, 22 May 2024 11:29:05 +0200
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Subject: [PATCH] Issue 6172 - RFE: improve the performance of evaluation of
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filter component when tested against a large valueset (like group members)
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(#6173)
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Bug description:
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Before returning an entry (to a SRCH) the server checks that the entry matches the SRCH filter.
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If a filter component (equality) is testing the value (ava) against a
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large valueset (like uniquemember values), it takes a long time because
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of the large number of values and required normalization of the values.
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This can be improved taking benefit of sorted valueset. Those sorted
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valueset were created to improve updates of large valueset (groups) but
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at that time not implemented in SRCH path.
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Fix description:
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In case of LDAP_FILTER_EQUALITY component, the server can get
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benefit of the sorted valuearray.
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To limit the risk of regression, we use the sorted valuearray
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only for the DN syntax attribute. Indeed the sorted valuearray was
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designed for those type of attribute.
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With those two limitations, there is no need of a toggle and
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the call to plugin_call_syntax_filter_ava can be replaced by
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a call to slapi_valueset_find.
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In both cases, sorted valueset and plugin_call_syntax_filter_ava, ava and
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values are normalized.
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In sorted valueset, the values have been normalized to insert the index
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in the sorted array and then comparison is done on normalized values.
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In plugin_call_syntax_filter_ava, all values in valuearray (of valueset) are normalized
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before comparison.
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relates: #6172
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Reviewed by: Pierre Rogier, Simon Pichugin (Big Thanks !!!)
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---
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.../tests/suites/filter/filter_test.py | 125 ++++++++++++++++++
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ldap/servers/slapd/filterentry.c | 22 ++-
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2 files changed, 146 insertions(+), 1 deletion(-)
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diff --git a/dirsrvtests/tests/suites/filter/filter_test.py b/dirsrvtests/tests/suites/filter/filter_test.py
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index d6bfa5a3b..4baaf04a7 100644
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--- a/dirsrvtests/tests/suites/filter/filter_test.py
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+++ b/dirsrvtests/tests/suites/filter/filter_test.py
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@@ -9,7 +9,11 @@
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import logging
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import pytest
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+import time
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+from lib389.dirsrv_log import DirsrvAccessLog
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from lib389.tasks import *
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+from lib389.backend import Backends, Backend
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+from lib389.dbgen import dbgen_users, dbgen_groups
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from lib389.topologies import topology_st
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from lib389._constants import PASSWORD, DEFAULT_SUFFIX, DN_DM, SUFFIX
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from lib389.utils import *
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@@ -304,6 +308,127 @@ def test_extended_search(topology_st):
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ents = topology_st.standalone.search_s(SUFFIX, ldap.SCOPE_SUBTREE, myfilter)
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assert len(ents) == 1
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+def test_match_large_valueset(topology_st):
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+ """Test that when returning a big number of entries
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+ and that we need to match the filter from a large valueset
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+ we get benefit to use the sorted valueset
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+
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+ :id: 7db5aa88-50e0-4c31-85dd-1d2072cb674c
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+
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+ :setup: Standalone instance
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+
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+ :steps:
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+ 1. Create a users and groups backends and tune them
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+ 2. Generate a test ldif (2k users and 1K groups with all users)
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+ 3. Import test ldif file using Offline import (ldif2db).
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+ 4. Prim the 'groups' entrycache with a "fast" search
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+ 5. Search the 'groups' with a difficult matching value
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+ 6. check that etime from step 5 is less than a second
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+
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+ :expectedresults:
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+ 1. Create a users and groups backends should PASS
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+ 2. Generate LDIF should PASS.
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+ 3. Offline import should PASS.
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+ 4. Priming should PASS.
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+ 5. Performance search should PASS.
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+ 6. Etime of performance search should PASS.
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+ """
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+
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+ log.info('Running test_match_large_valueset...')
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+ #
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+ # Test online/offline LDIF imports
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+ #
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+ inst = topology_st.standalone
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+ inst.start()
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+ backends = Backends(inst)
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+ users_suffix = "ou=users,%s" % DEFAULT_SUFFIX
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+ users_backend = 'users'
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+ users_ldif = 'users_import.ldif'
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+ groups_suffix = "ou=groups,%s" % DEFAULT_SUFFIX
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+ groups_backend = 'groups'
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+ groups_ldif = 'groups_import.ldif'
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+ groups_entrycache = '200000000'
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+ users_number = 2000
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+ groups_number = 1000
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+
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+
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+ # For priming the cache we just want to be fast
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+ # taking the first value in the valueset is good
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+ # whether the valueset is sorted or not
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+ priming_user_rdn = "user0001"
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+
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+ # For performance testing, this is important to use
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+ # user1000 rather then user0001
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+ # Because user0001 is the first value in the valueset
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+ # whether we use the sorted valuearray or non sorted
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+ # valuearray the performance will be similar.
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+ # With middle value user1000, the performance boost of
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+ # the sorted valuearray will make the difference.
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+ perf_user_rdn = "user1000"
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+
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+ # Step 1. Prepare the backends and tune the groups entrycache
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+ try:
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+ be_users = backends.create(properties={'parent': DEFAULT_SUFFIX, 'nsslapd-suffix': users_suffix, 'name': users_backend})
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+ be_groups = backends.create(properties={'parent': DEFAULT_SUFFIX, 'nsslapd-suffix': groups_suffix, 'name': groups_backend})
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+
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+ # set the entry cache to 200Mb as the 1K groups of 2K users require at least 170Mb
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+ be_groups.replace('nsslapd-cachememsize', groups_entrycache)
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+ except:
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+ raise
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+
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+ # Step 2. Generate a test ldif (10k users entries)
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+ log.info("Generating users LDIF...")
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+ ldif_dir = inst.get_ldif_dir()
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+ users_import_ldif = "%s/%s" % (ldif_dir, users_ldif)
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+ groups_import_ldif = "%s/%s" % (ldif_dir, groups_ldif)
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+ dbgen_users(inst, users_number, users_import_ldif, suffix=users_suffix, generic=True, parent=users_suffix)
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+
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+ # Generate a test ldif (800 groups with 10k members) that fit in 700Mb entry cache
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+ props = {
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+ "name": "group",
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+ "suffix": groups_suffix,
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+ "parent": groups_suffix,
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+ "number": groups_number,
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+ "numMembers": users_number,
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+ "createMembers": False,
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+ "memberParent": users_suffix,
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+ "membershipAttr": "uniquemember",
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+ }
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+ dbgen_groups(inst, groups_import_ldif, props)
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+
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+ # Step 3. Do the both offline imports
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+ inst.stop()
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+ if not inst.ldif2db(users_backend, None, None, None, users_import_ldif):
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+ log.fatal('test_basic_import_export: Offline users import failed')
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+ assert False
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+ if not inst.ldif2db(groups_backend, None, None, None, groups_import_ldif):
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+ log.fatal('test_basic_import_export: Offline groups import failed')
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+ assert False
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+ inst.start()
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+
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+ # Step 4. first prime the cache
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+ # Just request the 'DN'. We are interested by the time of matching not by the time of transfert
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+ entries = topology_st.standalone.search_s(groups_suffix, ldap.SCOPE_SUBTREE, "(&(objectclass=groupOfUniqueNames)(uniquemember=uid=%s,%s))" % (priming_user_rdn, users_suffix), ['dn'])
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+ assert len(entries) == groups_number
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+
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+ # Step 5. Now do the real performance checking it should take less than a second
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+ # Just request the 'DN'. We are interested by the time of matching not by the time of transfert
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+ search_start = time.time()
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+ entries = topology_st.standalone.search_s(groups_suffix, ldap.SCOPE_SUBTREE, "(&(objectclass=groupOfUniqueNames)(uniquemember=uid=%s,%s))" % (perf_user_rdn, users_suffix), ['dn'])
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+ duration = time.time() - search_start
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+ log.info("Duration of the search was %f", duration)
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+
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+ # Step 6. Gather the etime from the access log
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+ inst.stop()
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+ access_log = DirsrvAccessLog(inst)
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+ search_result = access_log.match(".*RESULT err=0 tag=101 nentries=%s.*" % groups_number)
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+ log.info("Found patterns are %s", search_result[0])
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+ log.info("Found patterns are %s", search_result[1])
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+ etime = float(search_result[1].split('etime=')[1])
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+ log.info("Duration of the search from access log was %f", etime)
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+ assert len(entries) == groups_number
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+ assert (etime < 1)
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+
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if __name__ == '__main__':
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# Run isolated
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# -s for DEBUG mode
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diff --git a/ldap/servers/slapd/filterentry.c b/ldap/servers/slapd/filterentry.c
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index fd8fdda9f..cae5c7edc 100644
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--- a/ldap/servers/slapd/filterentry.c
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+++ b/ldap/servers/slapd/filterentry.c
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@@ -296,7 +296,27 @@ test_ava_filter(
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rc = -1;
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for (; a != NULL; a = a->a_next) {
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if (slapi_attr_type_cmp(ava->ava_type, a->a_type, SLAPI_TYPE_CMP_SUBTYPE) == 0) {
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- rc = plugin_call_syntax_filter_ava(a, ftype, ava);
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+ if ((ftype == LDAP_FILTER_EQUALITY) &&
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+ (slapi_attr_is_dn_syntax_type(a->a_type))) {
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+ /* This path is for a performance improvement */
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+
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+ /* In case of equality filter we can get benefit of the
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+ * sorted valuearray (from valueset).
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+ * This improvement is limited to DN syntax attributes for
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+ * which the sorted valueset was designed.
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+ */
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+ Slapi_Value *sval = NULL;
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+ sval = slapi_value_new_berval(&ava->ava_value);
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+ if (slapi_valueset_find((const Slapi_Attr *)a, &a->a_present_values, sval)) {
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+ rc = 0;
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+ }
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+ slapi_value_free(&sval);
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+ } else {
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+ /* When sorted valuearray optimization cannot be used
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+ * lets filter the value according to its syntax
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+ */
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+ rc = plugin_call_syntax_filter_ava(a, ftype, ava);
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+ }
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if (rc == 0) {
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break;
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}
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--
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2.46.0
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@ -0,0 +1,163 @@
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From 57051154bafaf50b83fc27dadbd89a49fd1c8c36 Mon Sep 17 00:00:00 2001
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From: Pierre Rogier <progier@redhat.com>
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Date: Fri, 14 Jun 2024 13:27:10 +0200
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Subject: [PATCH] Security fix for CVE-2024-5953
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Description:
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A denial of service vulnerability was found in the 389 Directory Server.
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This issue may allow an authenticated user to cause a server denial
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of service while attempting to log in with a user with a malformed hash
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in their password.
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Fix Description:
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To prevent buffer overflow when a bind request is processed, the bind fails
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if the hash size is not coherent without even attempting to process further
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the hashed password.
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References:
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- https://nvd.nist.gov/vuln/detail/CVE-2024-5953
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- https://access.redhat.com/security/cve/CVE-2024-5953
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- https://bugzilla.redhat.com/show_bug.cgi?id=2292104
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---
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.../tests/suites/password/regression_test.py | 54 ++++++++++++++++++-
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ldap/servers/plugins/pwdstorage/md5_pwd.c | 9 +++-
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ldap/servers/plugins/pwdstorage/pbkdf2_pwd.c | 6 +++
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3 files changed, 66 insertions(+), 3 deletions(-)
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diff --git a/dirsrvtests/tests/suites/password/regression_test.py b/dirsrvtests/tests/suites/password/regression_test.py
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index 8f1facb6d..1fa581643 100644
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--- a/dirsrvtests/tests/suites/password/regression_test.py
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+++ b/dirsrvtests/tests/suites/password/regression_test.py
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@@ -7,12 +7,14 @@
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#
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import pytest
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import time
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+import glob
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+import base64
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from lib389._constants import PASSWORD, DN_DM, DEFAULT_SUFFIX
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from lib389._constants import SUFFIX, PASSWORD, DN_DM, DN_CONFIG, PLUGIN_RETRO_CHANGELOG, DEFAULT_SUFFIX, DEFAULT_CHANGELOG_DB
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from lib389 import Entry
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from lib389.topologies import topology_m1 as topo_supplier
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-from lib389.idm.user import UserAccounts
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-from lib389.utils import ldap, os, logging, ensure_bytes, ds_is_newer
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+from lib389.idm.user import UserAccounts, UserAccount
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+from lib389.utils import ldap, os, logging, ensure_bytes, ds_is_newer, ds_supports_new_changelog
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from lib389.topologies import topology_st as topo
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from lib389.idm.organizationalunit import OrganizationalUnits
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@@ -39,6 +41,13 @@ TEST_PASSWORDS += ['CNpwtest1ZZZZ', 'ZZZZZCNpwtest1',
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TEST_PASSWORDS2 = (
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'CN12pwtest31', 'SN3pwtest231', 'UID1pwtest123', 'MAIL2pwtest12@redhat.com', '2GN1pwtest123', 'People123')
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+SUPPORTED_SCHEMES = (
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+ "{SHA}", "{SSHA}", "{SHA256}", "{SSHA256}",
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+ "{SHA384}", "{SSHA384}", "{SHA512}", "{SSHA512}",
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+ "{crypt}", "{NS-MTA-MD5}", "{clear}", "{MD5}",
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+ "{SMD5}", "{PBKDF2_SHA256}", "{PBKDF2_SHA512}",
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+ "{GOST_YESCRYPT}", "{PBKDF2-SHA256}", "{PBKDF2-SHA512}" )
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+
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def _check_unhashed_userpw(inst, user_dn, is_present=False):
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"""Check if unhashed#user#password attribute is present or not in the changelog"""
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unhashed_pwd_attribute = 'unhashed#user#password'
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@@ -319,6 +328,47 @@ def test_unhashed_pw_switch(topo_supplier):
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# Add debugging steps(if any)...
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pass
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+@pytest.mark.parametrize("scheme", SUPPORTED_SCHEMES )
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+def test_long_hashed_password(topo, create_user, scheme):
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+ """Check that hashed password with very long value does not cause trouble
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+
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+ :id: 252a1f76-114b-11ef-8a7a-482ae39447e5
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+ :setup: standalone Instance
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+ :parametrized: yes
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+ :steps:
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+ 1. Add a test user user
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+ 2. Set a long password with requested scheme
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+ 3. Bind on that user using a wrong password
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+ 4. Check that instance is still alive
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+ 5. Remove the added user
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+ :expectedresults:
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+ 1. Success
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+ 2. Success
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+ 3. Should get ldap.INVALID_CREDENTIALS exception
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+ 4. Success
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+ 5. Success
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+ """
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+ inst = topo.standalone
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+ inst.simple_bind_s(DN_DM, PASSWORD)
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+ users = UserAccounts(inst, DEFAULT_SUFFIX)
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+ # Make sure that server is started as this test may crash it
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+ inst.start()
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+ # Adding Test user (It may already exists if previous test failed)
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+ user2 = UserAccount(inst, dn='uid=test_user_1002,ou=People,dc=example,dc=com')
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+ if not user2.exists():
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+ user2 = users.create_test_user(uid=1002, gid=2002)
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+ # Setting hashed password
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+ passwd = 'A'*4000
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+ hashed_passwd = scheme.encode('utf-8') + base64.b64encode(passwd.encode('utf-8'))
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+ user2.replace('userpassword', hashed_passwd)
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+ # Bind on that user using a wrong password
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+ with pytest.raises(ldap.INVALID_CREDENTIALS):
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+ conn = user2.bind(PASSWORD)
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+ # Check that instance is still alive
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+ assert inst.status()
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+ # Remove the added user
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+ user2.delete()
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+
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if __name__ == '__main__':
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# Run isolated
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diff --git a/ldap/servers/plugins/pwdstorage/md5_pwd.c b/ldap/servers/plugins/pwdstorage/md5_pwd.c
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index 1e2cf58e7..b9a48d5ca 100644
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--- a/ldap/servers/plugins/pwdstorage/md5_pwd.c
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+++ b/ldap/servers/plugins/pwdstorage/md5_pwd.c
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@@ -37,6 +37,7 @@ md5_pw_cmp(const char *userpwd, const char *dbpwd)
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unsigned char hash_out[MD5_HASH_LEN];
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unsigned char b2a_out[MD5_HASH_LEN * 2]; /* conservative */
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SECItem binary_item;
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+ size_t dbpwd_len = strlen(dbpwd);
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ctx = PK11_CreateDigestContext(SEC_OID_MD5);
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if (ctx == NULL) {
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@@ -45,6 +46,12 @@ md5_pw_cmp(const char *userpwd, const char *dbpwd)
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goto loser;
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}
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+ if (dbpwd_len >= sizeof b2a_out) {
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+ slapi_log_err(SLAPI_LOG_PLUGIN, MD5_SUBSYSTEM_NAME,
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+ "The hashed password stored in the user entry is longer than any valid md5 hash");
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+ goto loser;
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+ }
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+
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/* create the hash */
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PK11_DigestBegin(ctx);
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PK11_DigestOp(ctx, (const unsigned char *)userpwd, strlen(userpwd));
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@@ -57,7 +64,7 @@ md5_pw_cmp(const char *userpwd, const char *dbpwd)
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bver = NSSBase64_EncodeItem(NULL, (char *)b2a_out, sizeof b2a_out, &binary_item);
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/* bver points to b2a_out upon success */
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if (bver) {
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- rc = slapi_ct_memcmp(bver, dbpwd, strlen(dbpwd));
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+ rc = slapi_ct_memcmp(bver, dbpwd, dbpwd_len);
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} else {
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slapi_log_err(SLAPI_LOG_PLUGIN, MD5_SUBSYSTEM_NAME,
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"Could not base64 encode hashed value for password compare");
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diff --git a/ldap/servers/plugins/pwdstorage/pbkdf2_pwd.c b/ldap/servers/plugins/pwdstorage/pbkdf2_pwd.c
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index dcac4fcdd..82b8c9501 100644
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--- a/ldap/servers/plugins/pwdstorage/pbkdf2_pwd.c
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+++ b/ldap/servers/plugins/pwdstorage/pbkdf2_pwd.c
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@@ -255,6 +255,12 @@ pbkdf2_sha256_pw_cmp(const char *userpwd, const char *dbpwd)
|
||||
passItem.data = (unsigned char *)userpwd;
|
||||
passItem.len = strlen(userpwd);
|
||||
|
||||
+ if (pwdstorage_base64_decode_len(dbpwd, dbpwd_len) > sizeof dbhash) {
|
||||
+ /* Hashed value is too long and cannot match any value generated by pbkdf2_sha256_hash */
|
||||
+ slapi_log_err(SLAPI_LOG_ERR, (char *)schemeName, "Unable to base64 decode dbpwd value. (hashed value is too long)\n");
|
||||
+ return result;
|
||||
+ }
|
||||
+
|
||||
/* Decode the DBpwd to bytes from b64 */
|
||||
if (PL_Base64Decode(dbpwd, dbpwd_len, dbhash) == NULL) {
|
||||
slapi_log_err(SLAPI_LOG_ERR, (char *)schemeName, "Unable to base64 decode dbpwd value\n");
|
||||
--
|
||||
2.46.0
|
||||
|
||||
Loading…
Reference in new issue