Linux Kernel up to 3.4.27/3.7.4 evm_crypto.c evm_update_evmxattr denial of service

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5.0$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Linux Kernel up to 3.4.27/3.7.4. This issue affects the function evm_update_evmxattr of the file insecurity/integrity/evm/evm_crypto.c. The manipulation leads to denial of service. This vulnerability is documented as CVE-2013-0313. Additionally, an exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 3.4.27/3.7.4 (Operating System) and classified as problematic. This issue affects the function evm_update_evmxattr of the file insecurity/integrity/evm/evm_crypto.c. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability. The summary by CVE is:

The evm_update_evmxattr function in security/integrity/evm/evm_crypto.c in the Linux kernel before 3.7.5, when the Extended Verification Module (EVM) is enabled, allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via an attempted removexattr operation on an inode of a sockfs filesystem.

The weakness was released 01/21/2013 by Dmitry Kasatkin as a67adb997419fb53540d4a4f79c6471c60bc69b6 as confirmed git commit (GIT Repository). The advisory is shared at git.kernel.org. The public release was coordinated with Linux. The identification of this vulnerability is CVE-2013-0313 since 12/06/2012. The exploitation is known to be easy. An attack has to be approached locally. A simple authentication is needed for exploitation. Technical details as well as a private exploit are known.

It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 65609 (Ubuntu 12.04 LTS : linux vulnerabilities (USN-1767-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks.

Upgrading to version 3.4.28 or 3.7.5 eliminates this vulnerability. Applying the patch a67adb997419fb53540d4a4f79c6471c60bc69b6 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (82226), Tenable (65609), SecurityFocus (BID 58071†), OSVDB (90480†) and Secunia (SA52202†). Entries connected to this vulnerability are available at VDB-7779 and VDB-7777. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.0

VulDB Base Score: 5.5
VulDB Temp Score: 5.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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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: 🔍
Access: Private
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 65609
Nessus Name: Ubuntu 12.04 LTS : linux vulnerabilities (USN-1767-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 841363
OpenVAS Name: Ubuntu Update for linux USN-1767-1
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: Kernel 3.4.28/3.7.5
Patch: a67adb997419fb53540d4a4f79c6471c60bc69b6

Timelineinfo

12/06/2012 🔍
01/21/2013 +46 days 🔍
01/21/2013 +0 days 🔍
02/20/2013 +30 days 🔍
02/20/2013 +0 days 🔍
02/21/2013 +1 days 🔍
02/21/2013 +0 days 🔍
02/22/2013 +1 days 🔍
02/22/2013 +0 days 🔍
09/12/2013 +202 days 🔍
05/05/2021 +2792 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: a67adb997419fb53540d4a4f79c6471c60bc69b6
Researcher: Dmitry Kasatkin
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2013-0313 (🔍)
GCVE (CVE): GCVE-0-2013-0313
GCVE (VulDB): GCVE-100-7781

OVAL: 🔍

X-Force: 82226
SecurityFocus: 58071 - Linux Kernel CVE-2013-0313 NULL Pointer Dereference Denial of Service Vulnerability
Secunia: 52202 - Linux Kernel Extended Verification Module NULL Pointer Dereference Local Denial of Service, Not Critical
OSVDB: 90480
SecurityTracker: 1028196 - Linux Kernel Extended Verification Module Bug Lets Local Users Deny Service
Vulnerability Center: 41481 - Linux Kernel before 3.7.5 Local DoS and Other Unspecified Impact Vulnerability - CVE-2013-0313, Medium

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 02/22/2013 12:03
Updated: 05/05/2021 13:17
Changes: 02/22/2013 12:03 (85), 05/11/2017 08:42 (6), 05/05/2021 13:17 (3)
Complete: 🔍
Committer:
Cache ID: 216:DF7:103

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