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Bug 54002 - bind9: Multiple issues (5.0)
bind9: Multiple issues (5.0)
Status: CLOSED FIXED
Product: UCS
Classification: Unclassified
Component: Security updates
UCS 5.0
All Linux
: P3 normal (vote)
: UCS 5.0-0-errata
Assigned To: Quality Assurance
Philipp Hahn
:
Depends on:
Blocks:
  Show dependency tree / graph
 
Reported: 2021-11-01 12:09 CET by Quality Assurance
Modified: 2021-11-03 17:01 CET (History)
0 users

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What kind of report is it?: Security Issue
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Max CVSS v3 score: 3.7 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L)

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Description Quality Assurance univentionstaff 2021-11-01 12:09:14 CET 
New Debian bind9 1:9.11.5.P4+dfsg-5.1+deb10u6A~5.0.0.202111011209 fixes:
This update addresses the following issue:
* Lame cache can be abused to severely degrade resolver performance  (CVE-2021-25219)
Comment 1 Quality Assurance univentionstaff 2021-11-01 12:59:47 CET 
--- mirror/ftp/pool/main/b/bind9/bind9_9.11.5.P4+dfsg-5.1+deb10u5A~5.0.0.202105030845.dsc
+++ apt/ucs_5.0-0-errata5.0-0/source/bind9_9.11.5.P4+dfsg-5.1+deb10u6A~5.0.0.202111011209.dsc
@@ -1,4 +1,4 @@
-1:9.11.5.P4+dfsg-5.1+deb10u5A~5.0.0.202105030845 [Mon, 03 May 2021 08:45:56 +0200] Univention builddaemon <buildd@univention.de>:
+1:9.11.5.P4+dfsg-5.1+deb10u6A~5.0.0.202111011209 [Mon, 01 Nov 2021 12:09:57 +0100] Univention builddaemon <buildd@univention.de>:
 
   * UCS auto build. The following patches have been applied to the original source package
     0001-Bug-22478-build-bind-with-libdb4.8
@@ -18,6 +18,12 @@
     0016-Bug-46526-Fix-memory-leak
     0017-Bug-51786-fix-apparmor-profile
 
+1:9.11.5.P4+dfsg-5.1+deb10u6 [Mon, 25 Oct 2021 13:42:31 +0200] Ondřej Surý <ondrej@debian.org>:
+
+  * CVE-2021-25219: The "lame-ttl" option is now forcibly set to 0. This
+    effectively disables the lame server cache, as it could previously be
+    abused by an attacker to significantly degrade resolver performance.
+
 1:9.11.5.P4+dfsg-5.1+deb10u5 [Thu, 29 Apr 2021 12:42:26 +0200] Ondřej Surý <ondrej@debian.org>:
 
   * CVE-2021-25214: A malformed incoming IXFR transfer could trigger

<http://piuparts.knut.univention.de/5.0-0/#3326681213637528807>
Comment 2 Philipp Hahn univentionstaff 2021-11-01 14:14:57 CET 
OK: yaml
OK: announce_errata
OK: patch
OK: piuparts

[5.0-0] 6bb8a3bcfd Bug #54002: bind9 1:9.11.5.P4+dfsg-5.1+deb10u6A~5.0.0.202111011209
 doc/errata/staging/bind9.yaml | 13 +++++++++++++
 1 file changed, 13 insertions(+)
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