Linux Kernel restore_all denial of service

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.
5.9	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Linux Kernel and classified as problematic. This affects the function restore_all. Executing a manipulation can lead to denial of service. The identification of this vulnerability is CVE-2006-2932. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Linux Kernel (Operating System) (the affected version is unknown). This vulnerability affects the function restore_all. 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. CVE summarizes:

A regression error in the restore_all code path of the 4/4GB split support for non-hugemem Linux kernels on Red Hat Linux Desktop and Enterprise Linux 4 allows local users to cause a denial of service (panic) via unspecified vectors.

The bug was discovered 08/22/2006. The weakness was shared 08/23/2006 by Marcel Holtmann (McAfee) with McAfee AVERT Labs (Website). The advisory is shared for download at redhat.com. This vulnerability was named CVE-2006-2932 since 06/09/2006. The exploitation appears to be easy. The attack needs to be approached locally. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 22279 (CentOS 4 : kernel (CESA-2006:0617)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 156246 (Oracle Enterprise Linux Update for Kernel (ELSA-2006:0617, ELSA-2006:0689)).

Upgrading eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (31532), Tenable (22279), SecurityFocus (BID 19664†), OSVDB (28120†) and Secunia (SA21605†). The entries VDB-2256, VDB-2254, VDB-2255 and VDB-2257 are related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Operating System

Vendor

Linux

Name

Kernel

License

open-source

Website

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

CPE 2.3info

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CPE 2.2info

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CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 5.9

VulDB Base Score: 6.2
VulDB Temp Score: 5.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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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: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
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Nessus ID: 22279
Nessus Name: CentOS 4 : kernel (CESA-2006:0617)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/09/2006 🔍
08/22/2006 +74 days 🔍
08/22/2006 +0 days 🔍
08/23/2006 +1 days 🔍
08/23/2006 +0 days 🔍
08/23/2006 +0 days 🔍
08/23/2006 +0 days 🔍
08/23/2006 +0 days 🔍
08/23/2006 +0 days 🔍
08/30/2006 +6 days 🔍
09/04/2006 +5 days 🔍
03/12/2015 +3111 days 🔍
06/24/2019 +1565 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: redhat.com
Researcher: Marcel Holtmann (McAfee)
Organization: McAfee AVERT Labs
Status: Not defined
Confirmation: 🔍

CVE: CVE-2006-2932 (🔍)
GCVE (CVE): GCVE-0-2006-2932
GCVE (VulDB): GCVE-100-31924

OVAL: 🔍

X-Force: 31532
SecurityFocus: 19664 - Linux Kernel Non-Hugemem Support Local Denial of Service Vulnerability
Secunia: 21605 - Red Hat update for kernel, Moderately Critical
OSVDB: 28120 - Linux Kernel restore_all Function Local DoS
Vulnerability Center: 12612 - Linux Kernel Denial of Service due to Regression Error in Non-Hugemem Linux Kernels, Low

See also: 🔍

Entryinfo

Created: 03/12/2015 15:51
Updated: 06/24/2019 17:28
Changes: 03/12/2015 15:51 (79), 06/24/2019 17:28 (4)
Complete: 🔍
Cache ID: 216:939:103