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PostPosted: Tue Dec 06, 2016 4:26 am    Post subject: [ GLSA 201612-14 ] util-linux Reply with quote

Gentoo Linux Security Advisory

Title: util-linux: Arbitrary code execution (GLSA 201612-14)
Severity: normal
Exploitable: local
Date: December 06, 2016
Bug(s): #530844
ID: 201612-14

Synopsis

A vulnerability was discovered in util-linux, which could
potentially lead to the execution of arbitrary code.


Background

util-linux is a suite of Linux programs including mount and umount,
programs used to mount and unmount filesystems.


Affected Packages

Package: sys-apps/util-linux
Vulnerable: < 2.26
Unaffected: >= 2.26
Architectures: All supported architectures


Description

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.


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.

Resolution

All util-linux users should upgrade to the latest version:
Code:
# emerge --sync
      # emerge --ask --oneshot --verbose ">=sys-apps/util-linux-2.26"
   


References

CVE-2014-9114
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