Linux Kernel 3.8.0/3.8.1/3.8.2 process_keys.c install_user_keyrings race condition

CVSS Meta Temp Score
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CTI Interest Score
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5.9$0-$5k0.10

Summaryinfo

A vulnerability was found in Linux Kernel 3.8.0/3.8.1/3.8.2. It has been classified as problematic. This vulnerability affects the function install_user_keyrings of the file security/keys/process_keys.c. The manipulation leads to race condition. This vulnerability is documented as CVE-2013-1792. There is not any exploit available. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability was found in Linux Kernel 3.8.0/3.8.1/3.8.2 (Operating System). It has been rated as problematic. This issue affects the function install_user_keyrings of the file security/keys/process_keys.c. The manipulation with an unknown input leads to a race condition vulnerability. Using CWE to declare the problem leads to CWE-362. The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. Impacted is availability. The summary by CVE is:

Race condition in the install_user_keyrings function in security/keys/process_keys.c in the Linux kernel before 3.8.3 allows local users to cause a denial of service (NULL pointer dereference and system crash) via crafted keyctl system calls that trigger keyring operations in simultaneous threads.

The weakness was released 02/28/2013 by Mateusz Guzik with Red Hat as not defined mailinglist post (oss-sec). The advisory is shared at seclists.org. The public release was coordinated with Linux. The identification of this vulnerability is CVE-2013-1792 since 02/19/2013. The exploitation is known to be easy. An attack has to be approached locally. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 65183 (Fedora 18 : kernel-3.8.2-206.fc18 (2013-3630)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 166761 (OpenSuSE Security Update for Kernel (openSUSE-SU-2014:0204-1)).

Upgrading to version 3.8.3 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be patching the affected component. A possible mitigation has been published 6 days after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (82643), Tenable (65183), SecurityFocus (BID 58368†), OSVDB (90951†) and Secunia (SA52441†). Entries connected to this vulnerability are available at VDB-7938, VDB-7994, VDB-12137 and VDB-12786. 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: 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: 🔍
VulDB Temp Score: 🔍
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Exploitinginfo

Class: Race condition
CWE: CWE-362
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: 65183
Nessus Name: Fedora 18 : kernel-3.8.2-206.fc18 (2013-3630)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 892668
OpenVAS Name: Debian Security Advisory DSA 2668-1 (linux-2.6 - privilege escalation/denial of service/information leak
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: 🔍

Upgrade: Kernel 3.8.3
Patch: git.kernel.org

Timelineinfo

02/19/2013 🔍
02/28/2013 +9 days 🔍
02/28/2013 +0 days 🔍
02/28/2013 +0 days 🔍
03/06/2013 +6 days 🔍
03/08/2013 +2 days 🔍
03/11/2013 +3 days 🔍
03/22/2013 +11 days 🔍
05/06/2013 +45 days 🔍
05/06/2021 +2922 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: seclists.org
Researcher: Mateusz Guzik
Organization: Red Hat
Status: Not defined
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2013-1792 (🔍)
GCVE (CVE): GCVE-0-2013-1792
GCVE (VulDB): GCVE-100-7901

OVAL: 🔍

X-Force: 82643
SecurityFocus: 58368 - Linux Kernel CVE-2013-1792 Local Denial of Service Vulnerability
Secunia: 52441 - Linux Kernel "install_user_keyrings()" Race Condition Vulnerability, Less Critical
OSVDB: 90951
Vulnerability Center: 39434 - Linux Kernel 3.8-3.8.3 Local DoS Vulnerability via install_user_keyrings Function in process_keys.c (CVE-2013-1792), Medium

See also: 🔍

Entryinfo

Created: 03/08/2013 12:26
Updated: 05/06/2021 06:39
Changes: 03/08/2013 12:26 (86), 04/28/2017 18:13 (3), 05/06/2021 06:39 (3)
Complete: 🔍
Committer:
Cache ID: 216:AED:103

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