Detections
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GLSA-200701-01 : DenyHosts: Denial of Service

medium Nessus Plugin ID 23990

Synopsis

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

Description

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.

Solution

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

See Also

https://security.gentoo.org/glsa/200701-01

Plugin Details

Severity: Medium

ID: 23990

File Name: gentoo_GLSA-200701-01.nasl

Version: 1.14

Type: local

Published: 1/8/2007

Updated: 1/6/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.2

CVSS v2

Risk Factor: Medium

Base Score: 5

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

Vulnerability Information

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

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

Patch Publication Date: 1/3/2007

Vulnerability Publication Date: 12/4/2006

Reference Information

CVE: CVE-2006-6301

GLSA: 200701-01