CVE-2013-7176

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2014-02-01 · updated 2026-06-17
Weakness: CWE-20

Description

config/filter.d/postfix.conf in the postfix filter in Fail2ban before 0.8.11 allows remote attackers to trigger the blocking of an arbitrary IP address via a crafted e-mail address that matches an improperly designed regular expression.

Affected products

fail2ban: through 0.8.10; 0.1.0, 0.1.1, 0.1.2, 0.3.0, 0.3.1, 0.4.0 (+30)

References

http://lists.opensuse.org/opensuse-updates/2014-03/msg00021.html
http://www.debian.org/security/2014/dsa-2979
http://www.kb.cert.org/vuls/id/686662
https://github.com/fail2ban/fail2ban/commit/eb2f0c927257120dfc32d2450fd63f1962f38821
http://lists.opensuse.org/opensuse-updates/2014-03/msg00021.html
http://www.debian.org/security/2014/dsa-2979
http://www.kb.cert.org/vuls/id/686662
https://github.com/fail2ban/fail2ban/commit/eb2f0c927257120dfc32d2450fd63f1962f38821

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