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Debian Security Advisory DSA 2979-1 (fail2ban - security update)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
Two vulnerabilities were discovered in Fail2ban, a solution to ban hosts that cause multiple authentication errors. When using Fail2ban to monitor Postfix or Cyrus IMAP logs, improper input validation in log parsing could enable a remote attacker to trigger an IP ban on arbitrary addresses, resulting in denial of service.
Affected Software
Affected Software
fail2ban on Debian Linux
Detection Method
Detection Method
This check tests the installed software version using the apt package manager.
Solution
Solution
For the stable distribution (wheezy), these problems have been fixed in version 0.8.6-3wheezy3. For the testing distribution (jessie), these problems have been fixed in version 0.8.11-1. For the unstable distribution (sid), these problems have been fixed in version 0.8.11-1. We recommend that you upgrade your fail2ban packages.