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Red Hat Enterprise Linux 6.2 RHSA-2016:0601-01 Critical BIND DoS Alert

red hat
Calendar Grey April 6, 2016
Scroller Redhat
Ubuntu enhances kernel with critical patches rectifying privilege escalation flaws, classified High for severity.
An update for bind is now available for Red Hat Enterprise Linux 6.2 Advanced Update Support

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

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

After installing the update, the BIND daemon (named) will be restarted automatically.

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.
Security Fix(es):
* 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.

Topics%20covered

Topics Covered

security advisory security update Red Hat DoS important BIND impact

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 Server AUS (v. 6.2):
Source: bind-9.7.3-8.P3.el6_2.4.src.rpm
x86_64: bind-9.7.3-8.P3.el6_2.4.x86_64.rpm bind-chroot-9.7.3-8.P3.el6_2.4.x86_64.rpm bind-debuginfo-9.7.3-8.P3.el6_2.4.i686.rpm bind-debuginfo-9.7.3-8.P3.el6_2.4.x86_64.rpm bind-libs-9.7.3-8.P3.el6_2.4.i686.rpm bind-libs-9.7.3-8.P3.el6_2.4.x86_64.rpm bind-utils-9.7.3-8.P3.el6_2.4.x86_64.rpm
Red Hat Enterprise Linux Server Optional AUS (v. 6.2):
Source: bind-9.7.3-8.P3.el6_2.4.src.rpm
x86_64: bind-debuginfo-9.7.3-8.P3.el6_2.4.i686.rpm bind-debuginfo-9.7.3-8.P3.el6_2.4.x86_64.rpm bind-devel-9.7.3-8.P3.el6_2.4.i686.rpm bind-devel-9.7.3-8.P3.el6_2.4.x86_64.rpm bind-sdb-9.7.3-8.P3.el6_2.4.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2016:0601-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2016:0601.html
Issue date: 2016-04-06

Topic

An update for bind is now available for Red Hat Enterprise Linux 6.2Advanced Update Support.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory security update Red Hat DoS important BIND impact

Relevant Releases Architectures

Red Hat Enterprise Linux Server AUS (v. 6.2) - x86_64

Red Hat Enterprise Linux Server Optional AUS (v. 6.2) - 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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