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Test ID:1.3.6.1.4.1.25623.1.0.702708
Category:Debian Local Security Checks
Title:Debian Security Advisory DSA 2708-1 (fail2ban - denial of service)
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.
Description: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.

Affected Software/OS:
fail2ban on Debian Linux

Solution:
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 packages.

CVSS Score:
5.0

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

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2013-2178
Debian Security Information: DSA-2708 (Google Search)
http://www.debian.org/security/2013/dsa-2708
https://vndh.net/note:fail2ban-089-denial-service
http://www.openwall.com/lists/oss-security/2013/06/13/7
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A17338
SuSE Security Announcement: openSUSE-SU-2014:0348 (Google Search)
http://lists.opensuse.org/opensuse-updates/2014-03/msg00021.html
CopyrightCopyright (C) 2013 Greenbone Networks GmbH http://greenbone.net

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