DenyHosts 2.5 Logging denial of service

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in DenyHosts 2.5. Affected is an unknown function of the component Logging. This manipulation causes denial of service. This vulnerability is tracked as CVE-2006-6301. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability has been found in DenyHosts 2.5 and classified as problematic. Affected by this vulnerability is some unknown functionality of the component Logging. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. The summary by CVE is:

DenyHosts 2.5 does not properly parse sshd log files, which allows remote attackers to add arbitrary hosts to the /etc/hosts.deny file and cause a denial of service by adding arbitrary IP addresses to the sshd log file, as demonstrated by logging in via ssh with a login name containing certain strings with an IP address, which is not properly handled by a regular expression.

The bug was discovered 12/06/2006. The weakness was disclosed 12/06/2006 by Tavis Ormandy (taviso) with Gentoo (Website). The advisory is shared at xforce.iss.net. This vulnerability is known as CVE-2006-6301 since 12/05/2006. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available.

It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 23990 (GLSA-200701-01 : DenyHosts: Denial of Service), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Gentoo Local Security Checks and running in the context l.

Upgrading eliminates this vulnerability. A possible mitigation has been published 4 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (30761), Tenable (23990), SecurityFocus (BID 21468†), OSVDB (31067†) and Secunia (SA23236†). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 23990
Nessus Name: GLSA-200701-01 : DenyHosts: Denial of Service
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 57961
OpenVAS Name: Gentoo Security Advisory GLSA 200701-01 (denyhosts)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

12/05/2006 🔍
12/06/2006 +1 days 🔍
12/06/2006 +0 days 🔍
12/06/2006 +0 days 🔍
12/06/2006 +0 days 🔍
12/06/2006 +0 days 🔍
12/06/2006 +0 days 🔍
01/03/2007 +28 days 🔍
01/08/2007 +5 days 🔍
01/14/2007 +6 days 🔍
03/12/2015 +2979 days 🔍
07/13/2019 +1584 days 🔍

Sourcesinfo

Advisory: xforce.iss.net
Researcher: Tavis Ormandy (taviso)
Organization: Gentoo
Status: Not defined
Confirmation: 🔍

CVE: CVE-2006-6301 (🔍)
GCVE (CVE): GCVE-0-2006-6301
GCVE (VulDB): GCVE-100-33637
X-Force: 30761
SecurityFocus: 21468 - DenyHosts Remote Denial of Service Vulnerability
Secunia: 23236 - DenyHosts Denial of Service and Weakness, Moderately Critical
OSVDB: 31067 - DenyHosts - Remote Denial of Service Issue
Vulnerability Center: 14021 - DenyHosts 2.5 Remote Denial of Service due to Improper Parsing of SSHD Logs File, Medium
Vupen: ADV-2006-4876

Entryinfo

Created: 03/12/2015 22:21
Updated: 07/13/2019 16:49
Changes: 03/12/2015 22:21 (75), 07/13/2019 16:49 (9)
Complete: 🔍
Cache ID: 216::103

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