GLSA-200707-13 : Fail2ban: Denial of Service

Medium Nessus Plugin ID 25809


The remote Gentoo host is missing one or more security-related patches.


The remote host is affected by the vulnerability described in GLSA-200707-13 (Fail2ban: Denial of Service)

A vulnerability has been discovered in Fail2ban when parsing log files.
Impact :

A remote attacker could send specially crafted SSH login banners to the vulnerable host, which would prevent any ssh connection to the host and result in a Denial of Service.
Workaround :

There is no known workaround at this time.


All Fail2ban users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=net-analyzer/fail2ban-0.8.0-r1'

See Also

Plugin Details

Severity: Medium

ID: 25809

File Name: gentoo_GLSA-200707-13.nasl

Version: $Revision: 1.11 $

Type: local

Published: 2007/07/30

Modified: 2015/04/13

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 6.8

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:fail2ban, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Patch Publication Date: 2007/07/28

Reference Information

CVE: CVE-2007-4321

OSVDB: 42484

GLSA: 200707-13