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,

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Debian Security Advisory DSA-2850-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
http://www.debian.org/security/                      Salvatore Bonaccorso
January 31, 2014                       http://www.debian.org/security/faq
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Package        : libyaml
Vulnerability  : heap-based buffer overflow
Problem type   : local (remote)
Debian-specific: no
CVE ID         : CVE-2013-6393
Debian Bug     : 737076

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+deb6u2.

For the stable distribution (wheezy), this problem has been fixed in
version 0.1.4-2+deb7u2.

For the unstable distribution (sid), this problem has been fixed in
version 0.1.4-3.

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/

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