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Home >> Browse Vulnerability Assessment Database >> Gentoo Local Security Checks >> [GLSA-200511-17] FUSE: mtab corruption through fusermount


Vulnerability Assessment Details

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

Vulnerability Assessment Summary
FUSE: mtab corruption through fusermount

Detailed Explanation for this Vulnerability Assessment
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 permiting 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.

References:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3531


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


Network Security Threat Level: Medium


Networks Security ID:

Vulnerability Assessment Copyright: (C) 2005 Michel Arboi

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