– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
Gentoo Linux Security Advisory GLSA 201406-03
– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
http://security.gentoo.org/
– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
Severity: Normal
Title: Fail2ban: Multiple vulnerabilities
Date: June 01, 2014
Bugs: #364883, #473118, #499802
ID: 201406-03
– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
Synopsis
========
Multiple vulnerabilities have been found in Fail2ban, the worst of
which allows remote attackers to cause a Denial of Service condition.
Background
==========
Fail2ban is a tool for parsing log files and banning IP addresses which
show suspicious behavior.
Affected packages
=================
——————————————————————-
Package / Vulnerable / Unaffected
——————————————————————-
1 net-analyzer/fail2ban < 0.8.12 >= 0.8.12
Description
===========
Multiple vulnerabilities have been discovered in Fail2ban. Please
review the CVE identifiers referenced below for details.
Impact
======
A remote attacker could send a crafted URL to a web site which, when
parsed by Fail2ban, would deny a specific IP address. Also, errors in
regular expressions within certain filters can cause arbitrary IP
addresses to be banned. Furthermore, a local attacker could perform
symlink attacks to overwrite arbitrary files with the privileges of the
user running the application.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All Fail2ban users should upgrade to the latest version:
# emerge –sync
# emerge –ask –oneshot –verbose “>=net-analyzer/fail2ban-0.8.12
References
==========
[ 1 ] CVE-2009-5023
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2009-5023
[ 2 ] CVE-2013-2178
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-2178
[ 3 ] CVE-2013-7176
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-7176
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-201406-03.xml
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 2014 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
—–BEGIN PGP SIGNATURE—–
Version: GnuPG v2.0.17 (MingW32)
Comment: Using GnuPG with Thunderbird – http://www.enigmail.net/
iEYEARECAAYFAlOLSjUACgkQ23laikJhg1Qo7ACeL/1UC+ITZRIJeU76zfCl006I
mLsAn3AGnX70n3LjDgI6pra9gPG2I/Mu
=J1Eg
—–END PGP SIGNATURE—–
