Debian Security Advisory

DLA-648-1 c-ares -- LTS security update

Date Reported:
06 Oct 2016
Affected Packages:
Security database references:
In the Debian bugtracking system: Bug 839151.
In Mitre's CVE dictionary: CVE-2016-5180.
More information:

Gzob Qq discovered that the query-building functions in c-ares, an asynchronous DNS request library would not correctly process crafted query names, resulting in a heap buffer overflow and potentially leading to arbitrary code execution.

For Debian 7 Wheezy, these problems have been fixed in version 1.9.1-3+deb7u1.

We recommend that you upgrade your c-ares packages.

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: