Vulnerability Assessment & Network Security Forums



If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important.  If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery.


Home >> Browse Vulnerability Assessment Database >> Gentoo Local Security Checks >> [GLSA-200701-01] DenyHosts: Denial of Service


Vulnerability Assessment Details

[GLSA-200701-01] DenyHosts: Denial of Service

Vulnerability Assessment Summary
DenyHosts: Denial of Service

Detailed Explanation for this Vulnerability Assessment
The remote host is affected by the vulnerability described in GLSA-200701-01
(DenyHosts: Denial of Service)


Tavis Ormandy of the Gentoo Linux Security Audit Team discovered that
DenyHosts used an incomplete regular expression to parse failed login
attempts.

Impact

A remote unauthenticated attacker can add arbitrary hosts to the
blacklist by attempting to login with a specially crafted username. An
attacker may use this to prevent legitimate users from accessing a host
remotely.

Workaround

There is no known workaround at this time.

References:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-6301


Solution:
All DenyHosts users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-admin/denyhosts-2.6"


Network Security Threat Level: Medium


Networks Security ID:

Vulnerability Assessment Copyright: (C) 2007 Michel Arboi

Cables, Connectors

Dell R710 Dual E5645 6 Core 2.40GHz 48GB 8x 480GB SSD 2.5in H700 iDRAC Rails RPS
$2840.0
Dell R710 Dual E5645 6 Core 2.40GHz 48GB 8x 480GB SSD 2.5in H700 iDRAC Rails RPS pictureDell R720xd OEM Dual E5-2670 v2 10C 2.5GHz 256GB 2x 450GB, 10x 4TB 12 Bay Rails
$4269.0
Dell R720xd OEM Dual E5-2670 v2 10C 2.5GHz 256GB 2x 450GB, 10x 4TB 12 Bay Rails pictureDELL POWEREDGE M630 E5-2637V3 3.5GHZ 32GB 2 X 250GB SATA S130
$2289.0
DELL POWEREDGE M630 E5-2637V3 3.5GHZ 32GB 2 X 250GB SATA S130 pictureDELL POWEREDGE R630 8 BAY E5-2630LV3 1.8GHZ 384GB 6 X 1TB SAS H730
$8749.0
DELL POWEREDGE R630 8 BAY E5-2630LV3 1.8GHZ 384GB 6 X 1TB SAS H730 picture


Discussions

No Discussions have been posted on this vulnerability.