Linux Kernel up to 2.6.17.10 NFS lockd nlmclnt_mark_reclaim deadlock

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.2	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 2.6.17.10. It has been rated as problematic. Affected by this issue is the function nlmclnt_mark_reclaim of the component NFS lockd. Performing a manipulation results in deadlock. This vulnerability is identified as CVE-2006-5158. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Linux Kernel up to 2.6.17.10 (Operating System). It has been classified as critical. This affects the function nlmclnt_mark_reclaim of the component NFS lockd. The manipulation with an unknown input leads to a deadlock vulnerability. CWE is classifying the issue as CWE-833. The product contains multiple threads or executable segments that are waiting for each other to release a necessary lock, resulting in deadlock. This is going to have an impact on availability. The summary by CVE is:

The nlmclnt_mark_reclaim in clntlock.c in NFS lockd in Linux kernel before 2.6.16 allows remote attackers to cause a denial of service (process crash) and deny access to NFS exports via unspecified vectors that trigger a kernel oops (null dereference) and a deadlock.

The weakness was released 12/14/2006 by Matthias Andree (ryan) (Website). It is possible to read the advisory at ubuntu.com. This vulnerability is uniquely identified as CVE-2006-5158 since 10/03/2006. The attack needs to approached within the local network. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 67520 (Oracle Linux 4 : kernel (ELSA-2007-0488)), 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 156118 (Oracle Enterprise Linux Update for Kernel (ELSA-2007-0488)).

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at ftp.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published 7 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (67520), SecurityFocus (BID 21581†) and Secunia (SA26289†). Entries connected to this vulnerability are available at VDB-2755, VDB-2752, VDB-2754 and VDB-2753. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Operating System

Vendor

Linux

Name

Kernel

Version

License

open-source

Website

Vendor: https://www.kernel.org/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.2

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Deadlock
CWE: CWE-833 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 67520
Nessus Name: Oracle Linux 4 : kernel (ELSA-2007-0488)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 830023
OpenVAS Name: Zoho ManageEngine Support Center Plus Multiple Fields XSS Vulnerabilities
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
Exposure Time: 🔍

Patch: ftp.kernel.org

Timelineinfo

12/20/2005 🔍
10/03/2006 +287 days 🔍
10/05/2006 +2 days 🔍
12/14/2006 +70 days 🔍
12/18/2006 +4 days 🔍
06/26/2007 +190 days 🔍
07/31/2007 +35 days 🔍
07/12/2013 +2173 days 🔍
04/28/2019 +2116 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: ubuntu.com
Researcher: Matthias Andree (ryan)
Status: Not defined
Confirmation: 🔍

CVE: CVE-2006-5158 (🔍)
GCVE (CVE): GCVE-0-2006-5158
GCVE (VulDB): GCVE-100-2751

OVAL: 🔍

SecurityFocus: 21581 - Linux Kernel NFS LockD Dereference Remote Denial of Service Vulnerability
Secunia: 26289 - Avaya Products Linux Kernel Multiple Vulnerabilities, Moderately Critical

See also: 🔍

Entryinfo

Created: 12/18/2006 10:23
Updated: 04/28/2019 09:28
Changes: 12/18/2006 10:23 (85), 04/28/2019 09:28 (2)
Complete: 🔍
Cache ID: 216:14B:103