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38 lines
1.1 KiB
38 lines
1.1 KiB
4 weeks ago
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From 61112d1ce39848e08ec133f280cf8f729cb70d16 Mon Sep 17 00:00:00 2001
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From: Petr Mensik <pemensik@redhat.com>
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Date: Mon, 12 Feb 2024 20:41:43 +0100
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Subject: [PATCH] Prevent assertion failure if DNS64 and serve-stale is used
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Enabling both DNS64 and serve-stale may cause an assertion failure
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during recursive resolution.
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6317. [security] Restore DNS64 state when handling a serve-stale timeout.
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(CVE-2023-5679) [GL #4334]
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Resolves: CVE-2023-5679
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---
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lib/ns/query.c | 7 +++++++
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1 file changed, 7 insertions(+)
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diff --git a/lib/ns/query.c b/lib/ns/query.c
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index cc1d179..1993800 100644
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--- a/lib/ns/query.c
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+++ b/lib/ns/query.c
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@@ -5983,6 +5983,13 @@ query_lookup_stale(ns_client_t *client) {
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query_ctx_t qctx;
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qctx_init(client, NULL, client->query.qtype, &qctx);
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+ if (DNS64(client)) {
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+ qctx.qtype = qctx.type = dns_rdatatype_a;
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+ qctx.dns64 = true;
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+ }
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+ if (DNS64EXCLUDE(client)) {
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+ qctx.dns64_exclude = true;
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+ }
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dns_db_attach(client->view->cachedb, &qctx.db);
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client->query.attributes &= ~NS_QUERYATTR_RECURSIONOK;
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client->query.dboptions |= DNS_DBFIND_STALETIMEOUT;
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--
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2.43.0
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