Linux Kernel Namespace net/core/scm.c access control

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5.1	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Linux Kernel. This affects an unknown function of the file net/core/scm.c of the component Namespace Handler. Performing a manipulation results in access control. This vulnerability is known as CVE-2013-4300. No exploit is available. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability was found in Linux Kernel (Operating System) (affected version unknown). It has been classified as problematic. This affects an unknown functionality of the file net/core/scm.c of the component Namespace Handler. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-264. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The scm_check_creds function in net/core/scm.c in the Linux kernel before 3.11 performs a capability check in an incorrect namespace, which allows local users to gain privileges via PID spoofing.

The weakness was published 08/27/2013 with grsecurity as net: Check the correct namespace when spoofing pid over SCM_RIGHTS as confirmed git commit (GIT Repository). It is possible to read the advisory at git.kernel.org. This vulnerability is uniquely identified as CVE-2013-4300 since 06/12/2013. Attacking locally is a requirement. The successful exploitation needs a authentication. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 70541 (Ubuntu 12.04 LTS : linux-lts-raring vulnerabilities (USN-1995-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 195946 (Ubuntu Security Notification for Linux-lts-raring Vulnerabilities (USN-1995-1)).

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

The vulnerability is also documented in the databases at X-Force (86884), Tenable (70541), SecurityFocus (BID 62072†), OSVDB (96718†) and Secunia (SA54675†). Similar entries are available at VDB-10109 and VDB-10111. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Operating System

Vendor

Linux

Name

Kernel

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: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
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: 70541
Nessus Name: Ubuntu 12.04 LTS : linux-lts-raring vulnerabilities (USN-1995-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 841602
OpenVAS Name: Ubuntu Update for linux-lts-raring USN-1995-1
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Patch: git.kernel.org

Timelineinfo

06/12/2013 🔍
08/27/2013 +76 days 🔍
08/27/2013 +0 days 🔍
08/27/2013 +0 days 🔍
09/03/2013 +7 days 🔍
09/04/2013 +1 days 🔍
09/25/2013 +21 days 🔍
01/09/2014 +106 days 🔍
05/21/2021 +2689 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: net: Check the correct namespace when spoofing pid over SCM_RIGHTS
Organization: grsecurity
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2013-4300 (🔍)
GCVE (CVE): GCVE-0-2013-4300
GCVE (VulDB): GCVE-100-10095

OVAL: 🔍

X-Force: 86884
SecurityFocus: 62072 - Linux Kernel '/net/core/scm.c' nsproxy Local Privilege Escalation Vulnerability
Secunia: 54675 - Linux Kernel PID Spoofing Privilege Escalation Vulnerability, Less Critical
OSVDB: 96718
Vulnerability Center: 42834 - Linux Kernel Before 3.11 Local Privilege Escalation Vulnerability via Spoofing a PID, High

See also: 🔍

Entryinfo

Created: 09/03/2013 13:18
Updated: 05/21/2021 20:21
Changes: 09/03/2013 13:18 (80), 05/19/2017 10:40 (3), 05/21/2021 20:21 (3)
Complete: 🔍
Committer: olku
Cache ID: 216::103