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Debian Security Advisory 2850-2

Debian Security Advisory 2850-2
Posted Feb 13, 2014
Authored by Debian | Site debian.org

Debian Linux Security Advisory 2850-2 - The security update released in DSA-2850-1 for libyaml introduced a regression in libyaml failing to parse a subset of valid yaml documents.

tags | advisory
systems | linux, debian
MD5 | e49ccdc7d0fb6dccbdc48af420b1d348

Debian Security Advisory 2850-2

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- -------------------------------------------------------------------------
Debian Security Advisory DSA-2850-2 security@debian.org
http://www.debian.org/security/ Salvatore Bonaccorso
February 12, 2014 http://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package : libyaml
Vulnerability : regression
Debian Bug : 738587

The security update released in DSA-2850-1 for libyaml introduced a
regression in libyaml failing to parse a subset of valid yaml documents.
For reference the original advisory text follows.

Florian Weimer of the Red Hat Product Security Team discovered a
heap-based buffer overflow flaw in LibYAML, a fast YAML 1.1 parser and
emitter library. A remote attacker could provide a YAML document with a
specially-crafted tag that, when parsed by an application using libyaml,
would cause the application to crash or, potentially, execute arbitrary
code with the privileges of the user running the application.

For the oldstable distribution (squeeze), this problem has been fixed in
version 0.1.3-1+deb6u3.

For the stable distribution (wheezy), this problem has been fixed in
version 0.1.4-2+deb7u3.

For the unstable distribution (sid), this problem will be fixed soon.

We recommend that you upgrade your libyaml 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/

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