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import bind-9.11.26-4.el8_4

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CentOS Sources 2021-05-18 13:11:22 -04:00 committed by Andrew Lukoshko
parent e50e0af00e
commit 7ea3346926
2 changed files with 46 additions and 1 deletions
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40
SOURCES/bind-9.11-CVE-2021-25215.patch Normal file
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@ -0,0 +1,40 @@
From 6fc38d1c75ce5a6172267e6ca162c4fdc09657ad Mon Sep 17 00:00:00 2001
From: Petr Mensik <pemensik@redhat.com>
Date: Tue, 27 Apr 2021 10:56:12 +0200
Subject: [PATCH 2/2] CVE-2021-25215
5616. [security] named crashed when a DNAME record placed in the ANSWER
section during DNAME chasing turned out to be the final
answer to a client query. (CVE-2021-25215) [GL #2540]
---
bin/named/query.c | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)
diff --git a/bin/named/query.c b/bin/named/query.c
index a95f5ad..11a888e 100644
--- a/bin/named/query.c
+++ b/bin/named/query.c
@@ -9301,10 +9301,17 @@ query_find(ns_client_t *client, dns_fetchevent_t *event, dns_rdatatype_t qtype)
if (noqname != NULL)
query_addnoqnameproof(client, noqname);
/*
- * We shouldn't ever fail to add 'rdataset'
- * because it's already in the answer.
+ * 'rdataset' will only be non-NULL here if the ANSWER section
+ * of the message to be sent to the client already contains an
+ * RRset with the same owner name and the same type as
+ * 'rdataset'. This should never happen, with one exception:
+ * when chasing DNAME records, one of the DNAME records placed
+ * in the ANSWER section may turn out to be the final answer to
+ * the client's query, but we have no way of knowing that until
+ * now. In such a case, 'rdataset' will be freed later, so we
+ * do not need to free it here.
*/
- INSIST(rdataset == NULL);
+ INSIST(rdataset == NULL || qtype == dns_rdatatype_dname);
}
addauth:
--
2.26.3

7
SPECS/bind.spec
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@ -68,7 +68,7 @@ Summary: The Berkeley Internet Name Domain (BIND) DNS (Domain Name System) serv
Name: bind
License: MPLv2.0
Version: 9.11.26
Release: 3%{?PATCHVER:.%{PATCHVER}}%{?PREVER:.%{PREVER}}%{?dist}
Release: 4%{?PATCHVER:.%{PATCHVER}}%{?PREVER:.%{PREVER}}%{?dist}
Epoch: 32
Url: https://www.isc.org/downloads/bind/
#
@ -155,6 +155,7 @@ Patch175:bind-9.11-json-c.patch
Patch177:bind-9.11-serve-stale.patch
Patch178:bind-9.11-dhcp-time-monotonic.patch
Patch179:bind-9.11-CVE-2020-8625.patch
Patch180:bind-9.11-CVE-2021-25215.patch
# SDB patches
Patch11: bind-9.3.2b2-sdbsrc.patch
@ -550,6 +551,7 @@ are used for building ISC DHCP.
%patch177 -p1 -b .serve-stale
%patch178 -p1 -b .time-monotonic
%patch179 -p1 -b .CVE-2020-8625
%patch180 -p1 -b .CVE-2021-25215
mkdir lib/dns/tests/testdata/dstrandom
cp -a %{SOURCE50} lib/dns/tests/testdata/dstrandom/random.data
@ -1601,6 +1603,9 @@ rm -rf ${RPM_BUILD_ROOT}
%endif
%changelog
* Tue Apr 27 2021 Petr Menšík <pemensik@redhat.com> - 32:9.11.26-4
- Possible assertion failure on DNAME processing (CVE-2021-25215)
* Mon Feb 15 2021 Petr Menšík <pemensik@redhat.com> - 32:9.11.26-3
- Fix off-by-one bug in ISC SPNEGO implementation (CVE-2020-8625)