|Summary:||CVE-2015-5477 bind: TKEY query handling flaw leading to denial of service|
|Product:||[Other] Security Response||Reporter:||Martin Prpič <mprpic>|
|Component:||vulnerability||Assignee:||Red Hat Product Security <security-response-team>|
|Status:||CLOSED ERRATA||QA Contact:|
|Version:||unspecified||CC:||carnil, fweimer, jrusnack, mdshaikh, security-response-team, thozza, yohmura|
|Fixed In Version:||bind 9.9.7-P2, bind 9.10.2-P3||Doc Type:||Bug Fix|
A flaw was found in the way BIND handled requests for TKEY DNS resource records. A remote attacker could use this flaw to make named (functioning as an authoritative DNS server or a DNS resolver) exit unexpectedly with an assertion failure via a specially crafted DNS request packet.
|Last Closed:||2015-07-29 00:44:06 UTC||Type:||---|
|oVirt Team:||---||RHEL 7.3 requirements from Atomic Host:|
|Cloudforms Team:||---||Target Upstream Version:|
|Bug Depends On:||1247369, 1247370, 1247371, 1247372, 1247373, 1247374, 1247754, 1247755, 1300758, 1300760, 1300761|
Description Martin Prpič 2015-07-27 20:07:11 UTC
The following flaw, reported by ISC, was found in all versions of BIND 9 (from, and including, 9.1.0): An error in the handling of TKEY queries can be exploited by an attacker for use as a denial-of-service vector, as a constructed packet can use the defect to trigger a REQUIRE assertion failure, causing BIND to exit. Both recursive and authoritative servers are vulnerable to this defect. Additionally, exposure is not prevented by either ACLs or configuration options limiting or denying service because the exploitable code occurs early in the packet handling, before checks enforcing those boundaries. This flaw is fixed in upstream versions 9.9.7-P2 and 9.10.2-P3. Acknowledgements: Red Hat would like to thank ISC for reporting this issue. Upstream acknowledges Jonathan Foote as the original reporter.
Comment 6 Florian Weimer 2015-07-27 20:39:15 UTC
Created attachment 1056756 [details] bind99-CVE-2015-5477.patch Patch provided by upstream
Comment 11 Tomas Hoger 2015-07-28 18:50:24 UTC
Public now via upstream security advisory. External References: https://kb.isc.org/article/AA-01272 https://access.redhat.com/solutions/1548963
Comment 12 Tomas Hoger 2015-07-28 18:53:51 UTC
Created bind99 tracking bugs for this issue: Affects: fedora-22 [bug 1247755]
Comment 13 Tomas Hoger 2015-07-28 18:55:23 UTC
Created bind tracking bugs for this issue: Affects: fedora-all [bug 1247754]
Comment 14 Vincent Danen 2015-07-28 20:39:38 UTC
Comment 15 Tomas Hoger 2015-07-28 20:42:52 UTC
Comment 16 errata-xmlrpc 2015-07-28 22:54:12 UTC
This issue has been addressed in the following products: Red Hat Enterprise Linux 5 Via RHSA-2015:1515 https://rhn.redhat.com/errata/RHSA-2015-1515.html
Comment 17 errata-xmlrpc 2015-07-28 23:00:05 UTC
This issue has been addressed in the following products: Red Hat Enterprise Linux 5 Via RHSA-2015:1514 https://rhn.redhat.com/errata/RHSA-2015-1514.html
Comment 18 errata-xmlrpc 2015-07-29 00:32:38 UTC
This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Red Hat Enterprise Linux 6 Via RHSA-2015:1513 https://rhn.redhat.com/errata/RHSA-2015-1513.html
Comment 19 Fedora Update System 2015-08-01 02:25:36 UTC
bind-9.10.2-4.P3.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.
Comment 20 Fedora Update System 2015-08-01 02:25:57 UTC
bind-9.9.6-10.P1.fc21 has been pushed to the Fedora 21 stable repository. If problems still persist, please make note of it in this bug report.
Comment 21 Fedora Update System 2015-08-01 02:27:23 UTC
bind99-9.9.7-6.P2.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.
Comment 22 web 2015-08-03 10:50:35 UTC
(In reply to Vincent Danen from comment #14) > Statement: > > This issue affected the versions of bind as shipped with Red Hat Enterprise > Linux 4, 5, 6 and 7, and the versions of bind97 as shipped with Red Hat > Enterprise Linux 5. This is an important security update. When are the updated packages for RHEL 4 ELS going to be released? Thanks.
Comment 29 errata-xmlrpc 2016-01-28 13:27:47 UTC
This issue has been addressed in the following products: Red Hat Enterprise Linux 6.5 AUS - Server Only Red Hat Enterprise Linux 6.4 AUS - Server Only Via RHSA-2016:0078 https://rhn.redhat.com/errata/RHSA-2016-0078.html