GLSA-201405-27 : LibYAML: Arbitrary code execution

This script is Copyright (C) 2014-2015 Tenable Network Security, Inc.


Synopsis :

The remote Gentoo host is missing one or more security-related
patches.

Description :

The remote host is affected by the vulnerability described in GLSA-201405-27
(LibYAML: Arbitrary code execution)

The yaml_parser_scan_uri_escapes() function does not properly expand
strings passed as input, which can result in a heap-based buffer
overflow.

Impact :

An attacker could provide a specially crafted YAML document, which, when
parsed by LibYAML, could result in arbitrary code execution or cause the
application to crash.

Workaround :

There is no known workaround at this time.

See also :

https://security.gentoo.org/glsa/201405-27

Solution :

All LibYAML users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=dev-libs/libyaml-0.1.6'
Packages which depend on this library may need to be recompiled. Tools
such as revdep-rebuild may assist in identifying these packages.

Risk factor :

Medium / CVSS Base Score : 6.8
(CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P)
CVSS Temporal Score : 5.9
(CVSS2#E:ND/RL:OF/RC:C)
Public Exploit Available : false

Family: Gentoo Local Security Checks

Nessus Plugin ID: 74171 ()

Bugtraq ID: 66478

CVE ID: CVE-2014-2525

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