Gentoo: GLSA-201406-03: Fail2ban: Multiple vulnerabilities
Summary
Multiple vulnerabilities have been discovered in Fail2ban. Please review the CVE identifiers referenced below for details.
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:
https://security.gentoo.org/glsa/201406-03
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.
![Dist Gentoo](/images/distros/dist-gentoo.png)
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
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.