A maradns security update has been released for Debian GNU/Linux

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Debian Security Advisory DSA-2196-1 security@debian.org
http://www.debian.org/security/ Raphael Geissert
March 19, 2011 http://www.debian.org/security/faq
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Package : maradns
Vulnerability : buffer overflow
Problem type : remote
Debian-specific: no
CVE ID : CVE-2011-0520
Debian Bug : 610834

Witold Baryluk discovered that MaraDNS, a simple security-focused
Domain Name Service server, may overflow an internal buffer when
handling requests with a large number of labels, causing a server
crash and the consequent denial of service.

For the oldstable distribution (lenny), this problem has been fixed in
version 1.3.07.09-2.1.

For the stable distribution (squeeze) and greater this problem had
already been fixed in version 1.4.03-1.1.

We recommend that you upgrade your maradns 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/