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GLSA-201406-23 : DenyHosts: Denial of Service

medium Nessus Plugin ID 76225

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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-201406-23 (DenyHosts: Denial of Service)

 DenyHosts does not properly define the regular expressions used when parsing SSH authentication logs.
 Impact :

 A remote attacker could possibly cause a Denial of Service condition via a crafted login name.
 Workaround :

 There is no known workaround at this time.

Solution

All DenyHost users should upgrade to the latest version:
 # emerge --sync # emerge --ask --oneshot --verbose '>=app-admin/denyhosts-2.6-r9'

See Also

https://security.gentoo.org/glsa/201406-23

Plugin Details

Severity: Medium

ID: 76225

File Name: gentoo_GLSA-201406-23.nasl

Version: 1.6

Type: local

Published: 6/26/2014

Updated: 1/6/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.2

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/25/2014

Reference Information

CVE: CVE-2013-6890

BID: 64478

GLSA: 201406-23