Test ID:	1.3.6.1.4.1.25623.1.0.702826
Category:	Debian Local Security Checks
Title:	Debian: Security Advisory (DSA-2826-1)
Summary:	The remote host is missing an update for the Debian 'denyhosts' package(s) announced via the DSA-2826-1 advisory.
Description:	Summary: The remote host is missing an update for the Debian 'denyhosts' package(s) announced via the DSA-2826-1 advisory. Vulnerability Insight: Helmut Grohne discovered that denyhosts, a tool preventing SSH brute-force attacks, could be used to perform remote denial of service against the SSH daemon. Incorrectly specified regular expressions used to detect brute force attacks in authentication logs could be exploited by a malicious user to forge crafted login names in order to make denyhosts ban arbitrary IP addresses. For the oldstable distribution (squeeze), this problem has been fixed in version 2.6-7+deb6u2. For the stable distribution (wheezy), this problem has been fixed in version 2.6-10+deb7u2. For the testing distribution (jessie), this problem has been fixed in version 2.6-10.1. For the unstable distribution (sid), this problem has been fixed in version 2.6-10.1. We recommend that you upgrade your denyhosts packages. Affected Software/OS: 'denyhosts' package(s) on Debian 6, Debian 7. Solution: Please install the updated package(s). 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-2013-6890 Debian Security Information: DSA-2826 (Google Search) http://www.debian.org/security/2013/dsa-2826 https://bugzilla.redhat.com/show_bug.cgi?id=1045982 http://seclists.org/oss-sec/2013/q4/535 http://secunia.com/advisories/56239
Copyright	Copyright (C) 2013 Greenbone AG

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