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[gentoo-announce] [ GLSA 201903-09 ] GNU C Library: Arbitrary descriptor allocation

Posted on 14 March 2019
Gentoo-announce

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Gentoo Linux Security Advisory GLSA 201903-09
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https://security.gentoo.org/
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Severity: Normal
Title: GNU C Library: Arbitrary descriptor allocation
Date: March 14, 2019
Bugs: #617938
ID: 201903-09

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Synopsis
========
A vulnerability in the GNU C Library could result in a Denial of
Service condition.

Background
==========
The GNU C library is the standard C library used by Gentoo Linux
systems.

Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 sys-libs/glibc < 2.26.0 >= 2.26.0

Description
===========
A vulnerability was discovered in the GNU C Library functions xdr_bytes
and xdr_string.

Impact
======
A remote attacker, by sending a crafted UDP packet, could cause a
Denial of Service condition.

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

Resolution
==========
All GNU C Library users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=sys-libs/glibc-2.26.0"

References
==========
[ 1 ] CVE-2018-19591
https://nvd.nist.gov/vuln/detail/CVE-2018-19591

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

https://security.gentoo.org/glsa/201903-09

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 2019 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.

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

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