DSA-2517-1 bind9 -- denial of service

Debian Security Advisory

DSA-2517-1 bind9 -- denial of service

Date Reported:

30 Jul 2012

Affected Packages:

bind9

Vulnerable:

Yes

Security database references:

In Mitre's CVE dictionary: CVE-2012-3817.

More information:

Einar Lonn discovered that under certain conditions bind9, a DNS server, may use cached data before initialization. As a result, an attacker can trigger an assertion failure on servers under high query load that do DNSSEC validation.

For the stable distribution (squeeze), this problem has been fixed in version 1:9.7.3.dfsg-1~squeeze6.

For the testing distribution (wheezy), this problem will be fixed soon.

For the unstable distribution (sid), this problem has been fixed in version 1:9.8.1.dfsg.P1-4.2.

We recommend that you upgrade your bind9 packages.