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CVE-2012-5642

7.5 · HIGH

server/action.py in Fail2ban before 0.8.8 does not properly handle the content of the matches tag, which might allow remote attackers to trigger unsafe behavior in a custom action file via unspecif…

Published Dec 31, 2012fail2banEPSS 3.12%

Overview

CVE-2012-5642 is a high-severity vulnerability affecting fail2ban fail2ban. It was published on December 31, 2012 and has a CVSS 2.0 base score of 7.5 (HIGH).

This vulnerability has a CVSS 2.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

server/action.py in Fail2ban before 0.8.8 does not properly handle the content of the matches tag, which might allow remote attackers to trigger unsafe behavior in a custom action file via unspecified symbols in this content.

Remediation

Check the references section for vendor advisories and patches from fail2ban. Update fail2ban to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
fail2banfail2ban0Affected

References

Reflists.opensuse.org/opensuse-updates/2013-04/msg00001.htmlReflists.opensuse.org/opensuse-updates/2013-04/msg00002.htmlRefsourceforge.net/mailarchive/message.php?msg_id=30193056Refwww.mandriva.com/security/advisories?name=MDVSA-2013:078Refwww.openwall.com/lists/oss-security/2012/12/17/2Refbugs.gentoo.org/show_bug.cgi?id=447572Refbugzilla.redhat.com/show_bug.cgi?id=887914GitHubgithub.com/fail2ban/fail2ban/commit/83109bcGitHubraw.github.com/fail2ban/fail2ban/master/ChangeLogReflists.opensuse.org/opensuse-updates/2013-04/msg00001.html

How CyberStrike helps

Frequently asked questions

What is CVE-2012-5642?

CVE-2012-5642 is a high-severity vulnerability affecting fail2ban fail2ban. It was published on December 31, 2012 and has a CVSS 2.0 base score of 7.5 (HIGH).

How severe is CVE-2012-5642?

This vulnerability has a CVSS 2.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2012-5642?

Check the references section for vendor advisories and patches from fail2ban. Update fail2ban to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2012-5642?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2012-5642 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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