GLSA-200712-03 : GNU Emacs: Multiple vulnerabilities

This script is Copyright (C) 2007-2014 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-200712-03
(GNU Emacs: Multiple vulnerabilities)

Drake Wilson reported that the hack-local-variables() function in GNU
Emacs 22 does not properly match assignments of local variables in a
file against a list of unsafe or risky variables, allowing to override
them (CVE-2007-5795). Andreas Schwab (SUSE) discovered a stack-based
buffer overflow in the format function when handling values with high
precision (CVE-2007-6109).

Impact :

Remote attackers could entice a user to open a specially crafted file
in GNU Emacs, possibly leading to the execution of arbitrary Emacs Lisp
code (via CVE-2007-5795) or arbitrary code (via CVE-2007-6109) with the
privileges of the user running GNU Emacs.

Workaround :

The first vulnerability can be worked around by setting the
'enable-local-variables' option to 'nil', disabling the processing of
local variable lists. GNU Emacs prior to version 22 is not affected by
this vulnerability. There is no known workaround for the second
vulnerability at this time.

See also :

http://www.gentoo.org/security/en/glsa/glsa-200712-03.xml

Solution :

All GNU Emacs users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=app-editors/emacs-22.1-r3'

Risk factor :

Critical / CVSS Base Score : 10.0
(CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C)

Family: Gentoo Local Security Checks

Nessus Plugin ID: 29290 (gentoo_GLSA-200712-03.nasl)

Bugtraq ID:

CVE ID: CVE-2007-5795
CVE-2007-6109