Gentoo: GLSA-201612-14 Critical: Util-linux Command Injection Exploit
gentoo
December 6, 2016
A vulnerability was discovered in util-linux, which could potentially lead to the execution of arbitrary code.
Summary
A command injection flaw was discovered in util-linux's "blkid" utility. It uses caching files (/dev/.blkid.tab or /run/blkid/blkid.tab) to store info about the UUID, LABEL etc. it finds on certain devices. However, it does not strip '"' character, so it can be confused to build variable names containing shell metacharacters, which it would usually encode inside the value.
Resolution
All util-linux users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=sys-apps/util-linux-2.26"
References
[ 1 ] CVE-2014-9114 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-9114
Availability
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
https://security.gentoo.org/glsa/201612-14
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Concerns
Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.
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Severity: Normal
Title: util-linux: Arbitrary code execution
Date: December 06, 2016
Bugs: #530844
ID: 201612-14
Background
util-linux is a suite of Linux programs including mount and umount,
programs used to mount and unmount filesystems.
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Affected Packages
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
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1 sys-apps/util-linux < 2.26 >= 2.26
Impact
=====
A local attacker could create a specially crafted partition label
containing arbitrary code which would get executed when the "blkid"
utility processes that value.
Workaround
There is no known workaround at this time.
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