Gentoo: GLSA-200707-13: Fail2ban: Denial of Service
Summary
Gentoo Linux Security Advisory GLSA 200707-13
https://security.gentoo.org/
Severity: Normal
Title: Fail2ban: Denial of Service
Date: July 28, 2007
Bugs: #181214
ID: 200707-13
Synopsis
=======
Fail2ban is vulnerable to a Denial of Service attack.
Background
=========
Fail2ban is a tool for parsing log files and banning IP addresses which
make too many password failures.
Affected packages
================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-analyzer/fail2ban < 0.8.0-r1 >= 0.8.0-r1
==========
A vulnerability has been discovered in Fail2ban when parsing log files.
Impact
=====
A remote attacker could send specially crafted SSH login banners to the
vulnerable host, which would prevent any ssh connection to the host and
result in a Denial of Service.
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-0.8.0-r1"
References
=========
[ 1 ] Original advisory
Availability
===========
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
https://security.gentoo.org/glsa/200707-13
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 2007 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/
Resolution
References
Availability
Concerns
