GLSA-200511-17 : FUSE: mtab corruption through fusermount

This script is Copyright (C) 2005-2014 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-200511-17
(FUSE: mtab corruption through fusermount)

Thomas Biege discovered that fusermount fails to securely handle
special characters specified in mount points.

Impact :

A local attacker could corrupt the contents of the /etc/mtab file
by mounting over a maliciously-named directory using fusermount,
potentially allowing the attacker to set unauthorized mount options.
This is possible only if fusermount is installed setuid root, which is
the default in Gentoo.

Workaround :

There is no known workaround at this time.

See also :

http://www.gentoo.org/security/en/glsa/glsa-200511-17.xml

Solution :

All FUSE users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=sys-fs/fuse-2.4.1-r1'

Risk factor :

Low / CVSS Base Score : 2.1
(CVSS2#AV:L/AC:L/Au:N/C:N/I:P/A:N)

Family: Gentoo Local Security Checks

Nessus Plugin ID: 20261 (gentoo_GLSA-200511-17.nasl)

Bugtraq ID:

CVE ID: CVE-2005-3531