Input validation error in Fail2ban - CVE-2013-7176
Published: February 1, 2014 / Updated: August 10, 2020
Vulnerability identifier: #VU42086
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2013-7176
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
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 software
Fail2ban
Gentoo Linux
Fedora
fail2ban
Gentoo Linux
Fedora
fail2ban
How to mitigate CVE-2013-7176
Install update from vendor's website.
fail2ban - update to 0.8.13-2.el5