Linux Kernel up to 3.8.5 Access Restriction net/core/scm.c scm_check_creds SCM_CREDENTIALS access control

CVSS Meta Temp Score
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CTI Interest Score
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4.9$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Linux Kernel up to 3.8.5. This impacts the function scm_check_creds of the file net/core/scm.c of the component Access Restriction. This manipulation of the argument SCM_CREDENTIALS causes access control. The identification of this vulnerability is CVE-2013-1958. There is no exploit available. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability classified as problematic was found in Linux Kernel up to 3.8.5 (Operating System). Affected by this vulnerability is the function scm_check_creds of the file net/core/scm.c of the component Access Restriction. The manipulation of the argument SCM_CREDENTIALS with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect confidentiality, and integrity. The summary by CVE is:

The scm_check_creds function in net/core/scm.c in the Linux kernel before 3.8.6 does not properly enforce capability requirements for controlling the PID value associated with a UNIX domain socket, which allows local users to bypass intended access restrictions by leveraging the time interval during which a user namespace has been created but a PID namespace has not been created.

The weakness was shared 03/18/2013 by Andy Lutomirski as not defined mailinglist post (oss-sec). It is possible to read the advisory at openwall.com. This vulnerability is known as CVE-2013-1958 since 02/19/2013. The exploitation appears to be easy. Attacking locally is a requirement. The exploitation doesn't need any form of 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.

Applying the patch 92f28d973cce45ef5823209aab3138eb45d8b349 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 (83789), SecurityFocus (BID 59553†), OSVDB (92589†) and Vulnerability Center (SBV-39389†). The entries VDB-8480 and VDB-8481 are related to this item. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.1
VulDB Meta Temp Score: 4.9

VulDB Base Score: 5.1
VulDB Temp Score: 4.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Patch: 92f28d973cce45ef5823209aab3138eb45d8b349

Timelineinfo

02/19/2013 🔍
03/18/2013 +27 days 🔍
03/18/2013 +0 days 🔍
04/16/2013 +29 days 🔍
04/23/2013 +7 days 🔍
04/24/2013 +1 days 🔍
04/29/2013 +5 days 🔍
04/30/2013 +1 days 🔍
04/28/2017 +1459 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: openwall.com
Researcher: Andy Lutomirski
Status: Not defined
Confirmation: 🔍

CVE: CVE-2013-1958 (🔍)
GCVE (CVE): GCVE-0-2013-1958
GCVE (VulDB): GCVE-100-8479
X-Force: 83789
SecurityFocus: 59553 - Linux Kernel 'scm_check_creds()' Function CVE-2013-1958 Local Security Bypass Vulnerability
OSVDB: 92589
Vulnerability Center: 39389 - Linux Kernel 3.8.x \x27scm_check_creds()\x27 Local Security Restrictions Bypass, Low

See also: 🔍

Entryinfo

Created: 04/23/2013 11:50
Updated: 04/28/2017 10:06
Changes: 04/23/2013 11:50 (71), 04/28/2017 10:06 (2)
Complete: 🔍
Committer: olku
Cache ID: 216:361:103

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