FreeBSD : libyaml heap overflow resulting in possible code execution (111f1f84-1d14-4ff2-a9ea-cf07119c0d3b)

This script is Copyright (C) 2014 Tenable Network Security, Inc.


Synopsis :

The remote FreeBSD host is missing one or more security-related
updates.

Description :

libyaml was prone to a heap overflow that could result in arbitrary
code execution. Pkg uses libyaml to parse the package manifests in
some cases. Pkg also used libyaml to parse the remote repository until
1.2.

RedHat Product Security Team reports on libyaml :

A heap-based buffer overflow flaw was found in the way libyaml parsed
YAML tags. A remote attacker could provide a specially crafted YAML
document 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.

See also :

https://bugzilla.redhat.com/show_bug.cgi?id=1033990
http://www.nessus.org/u?c2d24e6c

Solution :

Update the affected packages.

Risk factor :

Medium / CVSS Base Score : 6.8
(CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P)

Family: FreeBSD Local Security Checks

Nessus Plugin ID: 72247 ()

Bugtraq ID:

CVE ID: CVE-2013-6393

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