CVE-2012-5642

Severity: high (CVSS 7.5 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2012-12-31 · updated 2026-06-16

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.

Affected products

fail2ban: through 0.8.7.1; 0.1.0, 0.1.1, 0.1.2, 0.3.0, 0.3.1, 0.4.0 (+27)

References

http://lists.opensuse.org/opensuse-updates/2013-04/msg00001.html
http://lists.opensuse.org/opensuse-updates/2013-04/msg00002.html
http://sourceforge.net/mailarchive/message.php?msg_id=30193056
http://www.mandriva.com/security/advisories?name=MDVSA-2013:078
http://www.openwall.com/lists/oss-security/2012/12/17/2
https://bugs.gentoo.org/show_bug.cgi?id=447572
https://bugzilla.redhat.com/show_bug.cgi?id=887914
https://github.com/fail2ban/fail2ban/commit/83109bc
https://raw.github.com/fail2ban/fail2ban/master/ChangeLog
http://lists.opensuse.org/opensuse-updates/2013-04/msg00001.html
http://lists.opensuse.org/opensuse-updates/2013-04/msg00002.html
http://sourceforge.net/mailarchive/message.php?msg_id=30193056

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