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Red Hat EL 5 Advisory RHSA-2016:0458-01 Critical: Bind97 Denial Of Service

red hat
Calendar Grey March 16, 2016
Scroller Redhat
Crucial bind97 security patch for Red Hat Enterprise Linux 5 addresses two severe vulnerabilities. Immediate upgrade advised.
Updated bind97 packages that fix two security issues are now available for Red Hat Enterprise Linux 5

Solution

Before applying this update, make sure all previously released errata relevant to your system have been applied.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258

Summary

The Berkeley Internet Name Domain (BIND) is an implementation of the Domain Name System (DNS) protocols. BIND includes a DNS server (named); a resolver library (routines for applications to use when interfacing with DNS); and tools for verifying that the DNS server is operating correctly.
A denial of service flaw was found in the way BIND parsed signature records for DNAME records. By sending a specially crafted query, a remote attacker could use this flaw to cause named to crash. (CVE-2016-1286)
A denial of service flaw was found in the way BIND processed certain control channel input. A remote attacker able to send a malformed packet to the control channel could use this flaw to cause named to crash. (CVE-2016-1285)
Red Hat would like to thank ISC for reporting these issues.
All bind97 users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. After installing the update, the BIND daemon (named) will be restarted automatically.

Topics%20covered

Topics Covered

security advisory security update red hat important DoS flaw bind97 issues fix

References

https://access.redhat.com/security/cve/CVE-2016-1285 https://access.redhat.com/security/cve/CVE-2016-1286 https://access.redhat.com/security/updates/classification#important https://kb.isc.org/docs/aa-01352 https://kb.isc.org/docs/aa-01353

Package List

Red Hat Enterprise Linux (v. 5 server):
Source: bind97-9.7.0-21.P2.el5_11.6.src.rpm
i386: bind97-9.7.0-21.P2.el5_11.6.i386.rpm bind97-chroot-9.7.0-21.P2.el5_11.6.i386.rpm bind97-debuginfo-9.7.0-21.P2.el5_11.6.i386.rpm bind97-devel-9.7.0-21.P2.el5_11.6.i386.rpm bind97-libs-9.7.0-21.P2.el5_11.6.i386.rpm bind97-utils-9.7.0-21.P2.el5_11.6.i386.rpm
ia64: bind97-9.7.0-21.P2.el5_11.6.ia64.rpm bind97-chroot-9.7.0-21.P2.el5_11.6.ia64.rpm bind97-debuginfo-9.7.0-21.P2.el5_11.6.ia64.rpm bind97-devel-9.7.0-21.P2.el5_11.6.ia64.rpm bind97-libs-9.7.0-21.P2.el5_11.6.ia64.rpm bind97-utils-9.7.0-21.P2.el5_11.6.ia64.rpm
ppc: bind97-9.7.0-21.P2.el5_11.6.ppc.rpm bind97-chroot-9.7.0-21.P2.el5_11.6.ppc.rpm bind97-debuginfo-9.7.0-21.P2.el5_11.6.ppc.rpm bind97-debuginfo-9.7.0-21.P2.el5_11.6.ppc64.rpm bind97-devel-9.7.0-21.P2.el5_11.6.ppc.rpm bind97-devel-9.7.0-21.P2.el5_11.6.ppc64.rpm bind97-libs-9.7.0-21.P2.el5_11.6.ppc.rpm bind97-libs-9.7.0-21.P2.el5_11.6.ppc64.rpm bind97-utils-9.7.0-21.P2.el5_11.6.ppc.rpm
s390x: bind97-9.7.0-21.P2.el5_11.6.s390x.rpm bind97-chroot-9.7.0-21.P2.el5_11.6.s390x.rpm bind97-debuginfo-9.7.0-21.P2.el5_11.6.s390.rpm bind97-debuginfo-9.7.0-21.P2.el5_11.6.s390x.rpm bind97-devel-9.7.0-21.P2.el5_11.6.s390.rpm bind97-devel-9.7.0-21.P2.el5_11.6.s390x.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2016:0458-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2016:0458.html
Issue date: 2016-03-16

Topic

Updated bind97 packages that fix two security issues are now available forRed Hat Enterprise Linux 5.Red Hat Product Security has rated this update as having Important securityimpact. Common Vulnerability Scoring System (CVSS) base scores, which givedetailed severity ratings, are available for each vulnerability from theCVE links in the References section.

Topics%20covered

Topics Covered

security advisory security update red hat important DoS flaw bind97 issues fix

Relevant Releases Architectures

Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64

Bugs Fixed

1315674 - CVE-2016-1285 bind: malformed packet sent to rndc can trigger assertion failure

1315680 - CVE-2016-1286 bind: malformed signature records for DNAME records can trigger assertion failure

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