An asterisk security update has been released for Debian GNU/Linux

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Debian Security Advisory DSA-2171-1 security@debian.org
http://www.debian.org/security/ Moritz Muehlenhoff
February 21, 2011 http://www.debian.org/security/faq
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Package : asterisk
Vulnerability : buffer overflow
Problem type : remote
Debian-specific: no
CVE ID : CVE-2011-0495
Debian Bug : 610487

Matthew Nicholson discovered a buffer overflow in the SIP channel driver
of Asterisk, an open source PBX and telephony toolkit, which could lead
to the execution of arbitrary code.

For the oldstable distribution (lenny), this problem has been fixed in
version 1.4.21.2~dfsg-3+lenny2.

For the stable distribution (squeeze), this problem has been fixed in
version 1.6.2.9-2+squeeze1.

The unstable distribution (sid) will be fixed soon.

We recommend that you upgrade your asterisk packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: http://www.debian.org/security/