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FreeBSD Security Advisory - named Denial Of Service

FreeBSD Security Advisory - named Denial Of Service
Posted Sep 28, 2011
Site security.freebsd.org

FreeBSD Security Advisory - A logic error in the BIND code causes the BIND daemon to accept bogus data, which could cause the daemon to crash.

tags | advisory
systems | freebsd
advisories | CVE-2011-2464
SHA-256 | c21e64c2f2aa94b36262f7c921be33cd4195b26c049f52e436c3a4f598e601bf

FreeBSD Security Advisory - named Denial Of Service

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=============================================================================
FreeBSD-SA-11:03.bind Security Advisory
The FreeBSD Project

Topic: Remote packet Denial of Service against named(8) servers

Category: contrib
Module: bind
Announced: 2011-09-28
Credits: Roy Arends
Affects: 8.2-STABLE after 2011-05-28 and prior to the correction date
Corrected: 2011-07-06 00:50:54 UTC (RELENG_8, 8.2-STABLE)
CVE Name: CVE-2011-2464

Note: This advisory concerns a vulnerability which existed only in
the FreeBSD 8-STABLE branch and was fixed over two months prior to the
date of this advisory.

For general information regarding FreeBSD Security Advisories,
including descriptions of the fields above, security branches, and the
following sections, please visit <URL:http://security.FreeBSD.org/>.

I. Background

BIND 9 is an implementation of the Domain Name System (DNS) protocols.
The named(8) daemon is an Internet Domain Name Server.

II. Problem Description

A logic error in the BIND code causes the BIND daemon to accept bogus
data, which could cause the daemon to crash.

III. Impact

An attacker able to send traffic to the BIND daemon can cause it to
crash, resulting in a denial of service.

IV. Workaround

No workaround is available, but systems not running the BIND name server
are not affected.

V. Solution

Upgrade your vulnerable system to 8-STABLE dated after the correction
date.

VI. Correction details

The following list contains the revision numbers of each file that was
corrected in FreeBSD.

CVS:

Branch Revision
Path
- -------------------------------------------------------------------------
RELENG_8
src/contrib/bind9/lib/dns/message.c 1.3.2.3
- -------------------------------------------------------------------------

Subversion:

Branch/path
Revision
- -------------------------------------------------------------------------
stable/8/ r223815
- -------------------------------------------------------------------------

VII. References

http://www.isc.org/software/bind/advisories/cve-2011-2464
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-2464

The latest revision of this advisory is available at
http://security.FreeBSD.org/advisories/FreeBSD-SA-11:03.bind.asc
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