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Debian Security Advisory DSA-3097-1                   security@debian.org
https://www.debian.org/security/                         Yves-Alexis Perez
December 10, 2014                      https://www.debian.org/security/faq
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Package        : unbound
CVE ID         : CVE-2014-8602
Debian Bug     : 772622

Florian Maury from ANSSI discovered that unbound, a validating,
recursive, and caching DNS resolver, was prone to a denial of service
vulnerability. An attacker crafting a malicious zone and able to emit
(or make emit) queries to the server can trick the resolver into
following an endless series of delegations, leading to ressource
exhaustion and huge network usage.

For the stable distribution (wheezy), this problem has been fixed in
version 1.4.17-3+deb7u2.

For the upcoming stable distribution (jessie), this problem has been
fixed in version 1.4.22-3.

For the unstable distribution (sid), this problem has been fixed in
version 1.4.22-3.

We recommend that you upgrade your unbound packages.

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

Mailing list: debian-security-announce@lists.debian.org