Linux Kernel TOMOYO LSM Mount input validation

CVSS Meta Temp Score
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CTI Interest Score
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7.2$0-$5k0.00

A vulnerability was found in Linux Kernel (Operating System) (version now known). It has been classified as critical. Affected is some unknown processing of the component TOMOYO LSM Mount. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on availability. CVE summarizes:

The tomoyo_mount_acl function in security/tomoyo/mount.c in the Linux kernel before 2.6.39.2 calls the kern_path function with arguments taken directly from a mount system call, which allows local users to cause a denial of service (OOPS) or possibly have unspecified other impact via a NULL value for the device name.

The weakness was presented 02/28/2012 (oss-sec). The advisory is shared for download at openwall.com. This vulnerability is traded as CVE-2011-2518 since 06/15/2011. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 58170 (Ubuntu 11.04 : linux vulnerabilities (USN-1380-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at ubuntu.com. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (73544), Tenable (58170), SecurityFocus (BID 52202†), OSVDB (79656†) and Secunia (SA47681†). See VDB-60827 for similar entry.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 58170
Nessus Name: Ubuntu 11.04 : linux vulnerabilities (USN-1380-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 840913
OpenVAS Name: Ubuntu Update for linux USN-1380-1
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Patch: ubuntu.com

Timelineinfo

06/15/2011 🔍
02/28/2012 +258 days 🔍
02/28/2012 +0 days 🔍
02/29/2012 +1 days 🔍
02/29/2012 +0 days 🔍
02/29/2012 +0 days 🔍
02/29/2012 +0 days 🔍
05/24/2012 +85 days 🔍
02/17/2014 +634 days 🔍
03/21/2021 +2589 days 🔍

Sourcesinfo

Vendor: kernel.org

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

CVE: CVE-2011-2518 (🔍)
OVAL: 🔍

X-Force: 73544
SecurityFocus: 52202 - Linux Kernel TOMOYO LSM CVE-2011-2518 Local Denial of Service Vulnerability
Secunia: 47681 - Ubuntu update for kernel, Less Critical
OSVDB: 79656
Vulnerability Center: 43311 - Linux Kernel before 2.6.39.2 Local DoS Vulnerability in tomoyo_mount_acl(), Medium

See also: 🔍

Entryinfo

Created: 02/29/2012 01:00 AM
Updated: 03/21/2021 07:42 AM
Changes: 02/29/2012 01:00 AM (74), 05/21/2017 02:06 PM (3), 03/21/2021 07:42 AM (3)
Complete: 🔍
Cache ID: 18:F3B:40

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