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Gentoo Linux Security Advisory GLSA 201406-03 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: Fail2ban: Multiple vulnerabilities |
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Date: June 01, 2014 |
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Bugs: #364883, #473118, #499802 |
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ID: 201406-03 |
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Synopsis |
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======== |
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|
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Multiple vulnerabilities have been found in Fail2ban, the worst of |
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which allows remote attackers to cause a Denial of Service condition. |
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Background |
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========== |
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Fail2ban is a tool for parsing log files and banning IP addresses which |
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show suspicious behavior. |
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Affected packages |
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================= |
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|
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------------------------------------------------------------------- |
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Package / Vulnerable / Unaffected |
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------------------------------------------------------------------- |
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1 net-analyzer/fail2ban < 0.8.12 >= 0.8.12 |
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Description |
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=========== |
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|
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Multiple vulnerabilities have been discovered in Fail2ban. Please |
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review the CVE identifiers referenced below for details. |
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Impact |
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====== |
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A remote attacker could send a crafted URL to a web site which, when |
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parsed by Fail2ban, would deny a specific IP address. Also, errors in |
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regular expressions within certain filters can cause arbitrary IP |
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addresses to be banned. Furthermore, a local attacker could perform |
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symlink attacks to overwrite arbitrary files with the privileges of the |
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user running the application. |
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Workaround |
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========== |
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There is no known workaround at this time. |
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Resolution |
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========== |
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All Fail2ban users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=net-analyzer/fail2ban-0.8.12 |
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References |
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========== |
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[ 1 ] CVE-2009-5023 |
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http://nvd.nist.gov/nvd.cfm?cvename=CVE-2009-5023 |
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[ 2 ] CVE-2013-2178 |
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http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-2178 |
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[ 3 ] CVE-2013-7176 |
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http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-7176 |
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Availability |
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============ |
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This GLSA and any updates to it are available for viewing at |
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the Gentoo Security Website: |
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http://security.gentoo.org/glsa/glsa-201406-03.xml |
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Concerns? |
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========= |
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Security is a primary focus of Gentoo Linux and ensuring the |
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confidentiality and security of our users' machines is of utmost |
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importance to us. Any security concerns should be addressed to |
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security@g.o or alternatively, you may file a bug at |
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https://bugs.gentoo.org. |
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License |
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======= |
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Copyright 2014 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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The contents of this document are licensed under the |
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Creative Commons - Attribution / Share Alike license. |
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http://creativecommons.org/licenses/by-sa/2.5 |
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