Several vulnerabilities were discovered in Asterisk, a PBX and telephony
toolkit, that allow remote attackers to perform denial of service
attacks.
For the stable distribution (squeeze), these problems have been fixed in
version 1:1.6.2.9-2+squeeze10.
For the testing distribution (wheezy) and unstable distribution (sid),
these problems will be fixed soon.
We recommend that you upgrade your asterisk packages.