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edk2/SOURCES/edk2-NetworkPkg-Ip6Dxe-SECU...

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From d51f47c8654f44a787d70b675830ebc7a4ea74f6 Mon Sep 17 00:00:00 2001
From: Jon Maloy <jmaloy@redhat.com>
Date: Thu, 15 Feb 2024 11:51:09 -0500
Subject: [PATCH 06/18] NetworkPkg: Ip6Dxe: SECURITY PATCH CVE-2023-45231 Patch
RH-Author: Jon Maloy <jmaloy@redhat.com>
RH-MergeRequest: 54: NetworkPkg: Dhcp6Dxe: SECURITY PATCH CVE-2023-45230 Patch
RH-Jira: RHEL-21841 RHEL-21843 RHEL-21845 RHEL-21847 RHEL-21849 RHEL-21851 RHEL-21853
RH-Acked-by: Gerd Hoffmann <None>
RH-Acked-by: Laszlo Ersek <lersek@redhat.com>
RH-Commit: [6/18] 58ad218f1216ac1ea34ca01ef8cc21e207e2eaf2
JIRA: https://issues.redhat.com/browse/RHEL-21845
CVE: CVE-2022-45231
Upstream: Merged
commit bbfee34f4188ac00371abe1389ae9c9fb989a0cd
Author: Doug Flick <dougflick@microsoft.com>
Date: Fri Jan 26 05:54:48 2024 +0800
NetworkPkg: Ip6Dxe: SECURITY PATCH CVE-2023-45231 Patch
REF:https://bugzilla.tianocore.org/show_bug.cgi?id=4536
Bug Overview:
PixieFail Bug #3
CVE-2023-45231
CVSS 6.5 : CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE-125 Out-of-bounds Read
Out-of-bounds read when handling a ND Redirect message with truncated
options
Change Overview:
Adds a check to prevent truncated options from being parsed
+ //
+ // Cannot process truncated options.
+ // Cannot process options with a length of 0 as there is no Type
field.
+ //
+ if (OptionLen < sizeof (IP6_OPTION_HEADER)) {
+ return FALSE;
+ }
Cc: Saloni Kasbekar <saloni.kasbekar@intel.com>
Cc: Zachary Clark-williams <zachary.clark-williams@intel.com>
Signed-off-by: Doug Flick [MSFT] <doug.edk2@gmail.com>
Reviewed-by: Saloni Kasbekar <saloni.kasbekar@intel.com>
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
---
NetworkPkg/Ip6Dxe/Ip6Option.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/NetworkPkg/Ip6Dxe/Ip6Option.c b/NetworkPkg/Ip6Dxe/Ip6Option.c
index 199eea124d..8718d5d875 100644
--- a/NetworkPkg/Ip6Dxe/Ip6Option.c
+++ b/NetworkPkg/Ip6Dxe/Ip6Option.c
@@ -137,6 +137,14 @@ Ip6IsNDOptionValid (
return FALSE;
}
+ //
+ // Cannot process truncated options.
+ // Cannot process options with a length of 0 as there is no Type field.
+ //
+ if (OptionLen < sizeof (IP6_OPTION_HEADER)) {
+ return FALSE;
+ }
+
Offset = 0;
//
--
2.39.3