Debian Security Advisory DSA 2708-1 (fail2ban - denial of service)

Published: 2013-06-15 22:00:00
CVE Author: NIST National Vulnerability Database (NVD)

CVSS Base Vector:
AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected Versions:
fail2ban on Debian Linux

Recommendations:
For the oldstable distribution (squeeze), this problem has been fixed in version 0.8.4-3+squeeze2. For the stable distribution (wheezy), this problem has been fixed in version 0.8.6-3wheezy2. For the testing distribution (jessie), this problem has been fixed in version 0.8.10-1. For the unstable distribution (sid), this problem has been fixed in version 0.8.10-1. We recommend that you upgrade your fail2ban Linux Distribution Packages.

Summary:
Krzysztof Katowicz-Kowalewski discovered a vulnerability in Fail2ban, a log monitoring and system which can act on attack by preventing hosts to connect to specified services using the local firewall. When using Fail2ban to monitor Apache logs, improper input validation in log parsing could enable a remote attacker to trigger an IP ban on arbitrary addresses, thus causing a denial of service.

Detection Method:
This check tests the installed software version using the apt Linux Distribution Package manager.

Detection Type:
Linux Distribution Package

Solution Type:
Vendor Patch

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)

https://nvd.nist.gov/vuln/detail/CVE-2013-2178

References:

http://www.debian.org/security/2013/dsa-2708.html

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Severity
Medium
CVSS Score
5.0

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