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[gentoo-announce] [ GLSA 201701-11 ] musl: Integer overflow

Posted on 02 January 2017
Gentoo-announce

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From: Thomas Deutschmann <whissi@gentoo.org>
Reply-To: security@gentoo.org
To: gentoo-announce@lists.gentoo.org
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Subject: [ GLSA 201701-11 ] musl: Integer overflow

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Gentoo Linux Security Advisory GLSA 201701-11
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https://security.gentoo.org/
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Severity: Normal
Title: musl: Integer overflow
Date: January 02, 2017
Bugs: #597498
ID: 201701-11

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Synopsis
========
An integer overflow in musl might allow an attacker to execute
arbitrary code.

Background
==========
musl is a "libc", an implementation of the standard library
functionality described in the ISO C and POSIX standards, plus common
extensions, intended for use on Linux-based systems.

Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 sys-libs/musl < 1.1.15-r2 >= 1.1.15-r2

Description
===========
A vulnerability was discovered in musl's tre_tnfa_run_parallel function
buffer overflow logic, due to the incorrect use of integer types and
missing overflow checks.

Impact
======
An attacker, who controls the regular expression and/or string being
searched, could execute arbitrary code with the privileges of the
process.

Workaround
==========
There is no known workaround at this time.

Resolution
==========
All musl users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=sys-libs/musl-1.1.15-r2"

References
==========
[ 1 ] CVE-2016-8859
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-8859

Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

https://security.gentoo.org/glsa/201701-11

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.

License
=======
Copyright 2017 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/2.5


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