Linux Kernel 2.6.20.1 denial of service

CVSS Meta Temp Score
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CTI Interest Score
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3.8$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Linux Kernel 2.6.20.1. Impacted is an unknown function. This manipulation causes denial of service. The identification of this vulnerability is CVE-2006-6921. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel 2.6.20.1 (Operating System). It has been declared as problematic. Affected by this vulnerability is some unknown processing. 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:

Unspecified versions of the Linux kernel allow local users to cause a denial of service (unrecoverable zombie process) via a program with certain instructions that prevent init from properly reaping a child whose parent has died.

The bug was discovered 12/19/2006. The weakness was shared 01/12/2007 (Website). The advisory is shared at redhat.com. This vulnerability is known as CVE-2006-6921 since 01/12/2007. The exploitation appears to be easy. An attack has to be approached locally. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 24 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 67580 (Oracle Linux 4 : kernel (ELSA-2007-0939)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Oracle Linux Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 117337 (CentOS Security Update for Kernel (CESA-2008:0154)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 11 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (41063), Tenable (67580), SecurityFocus (BID 25216†), OSVDB (37125†) and Secunia (SA27436†). The entries VDB-3228, VDB-3480, VDB-38779 and VDB-38778 are related to this item. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.0
VulDB Meta Temp Score: 3.8

VulDB Base Score: 4.0
VulDB Temp Score: 3.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

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

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 67580
Nessus Name: Oracle Linux 4 : kernel (ELSA-2007-0939)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 870067
OpenVAS Name: Rhino Software Serv-U SITE SET Command Denial Of Service vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Timelineinfo

12/19/2006 🔍
01/12/2007 +24 days 🔍
01/12/2007 +0 days 🔍
01/12/2007 +0 days 🔍
01/12/2007 +0 days 🔍
02/05/2007 +24 days 🔍
08/06/2007 +182 days 🔍
11/01/2007 +87 days 🔍
11/02/2007 +1 days 🔍
11/04/2007 +2 days 🔍
07/12/2013 +2077 days 🔍
03/12/2015 +608 days 🔍
07/29/2019 +1600 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: redhat.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2006-6921 (🔍)
GCVE (CVE): GCVE-0-2006-6921
GCVE (VulDB): GCVE-100-34369

OVAL: 🔍

X-Force: 41063
SecurityFocus: 25216 - Linux Kernel AACRAID Driver Local Security Bypass Vulnerability
Secunia: 27436
OSVDB: 37125 - CVE-2006-6921 - Linux Kernel - Denial-of-service Issue
Vulnerability Center: 16717 - Linux Kernel Unspecified Vulnerability Allows Local Attackers to Cause DoS, Low

See also: 🔍

Entryinfo

Created: 03/12/2015 22:21
Updated: 07/29/2019 15:40
Changes: 03/12/2015 22:21 (78), 07/29/2019 15:40 (7)
Complete: 🔍
Cache ID: 216:E32:103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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