Linux Kernel 3.12.1 ipc/shm.c race condition

CVSS Meta Temp Score
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CTI Interest Score
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5.9$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Linux Kernel 3.12.1. The impacted element is an unknown function of the file ipc/shm.c. This manipulation causes race condition. This vulnerability is handled as CVE-2013-7026. There is not any exploit available. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability was found in Linux Kernel 3.12.1 (Operating System). It has been declared as problematic. Affected by this vulnerability is an unknown code of the file ipc/shm.c. The manipulation with an unknown input leads to a race condition vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect availability. The summary by CVE is:

Multiple race conditions in ipc/shm.c in the Linux kernel before 3.12.2 allow local users to cause a denial of service (use-after-free and system crash) or possibly have unspecified other impact via a crafted application that uses shmctl IPC_RMID operations in conjunction with other shm system calls.

The weakness was released 11/21/2013 as ipc,shm: fix shm_file deletion races as confirmed posting (GIT Repository). It is possible to read the advisory at github.com. The public release was coordinated with Linux. This vulnerability is known as CVE-2013-7026 since 12/09/2013. 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 vulnerability scanner Nessus provides a plugin with the ID 71796 (Ubuntu 12.04 LTS : linux-lts-saucy vulnerabilities (USN-2070-1)), 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 195833 (Ubuntu Security Notification for Linux-lts-saucy Vulnerabilities (USN-2070-1)).

Applying the patch ipc/shm: fix shm_file deletion races is able to eliminate this problem. The bugfix is ready for download at github.com. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (71796), SecurityFocus (BID 64312†), OSVDB (100836†) and Vulnerability Center (SBV-42827†). Additional details are provided at kernel.org. Entries connected to this vulnerability are available at VDB-10574, VDB-11315, VDB-11317 and VDB-11365. 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: 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: 71796
Nessus Name: Ubuntu 12.04 LTS : linux-lts-saucy vulnerabilities (USN-2070-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 841679
OpenVAS Name: Ubuntu Update for linux-lts-saucy USN-2070-1
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: ipc/shm: fix shm_file deletion races

Timelineinfo

11/21/2013 🔍
11/21/2013 +0 days 🔍
12/09/2013 +18 days 🔍
12/09/2013 +0 days 🔍
12/09/2013 +0 days 🔍
12/10/2013 +1 days 🔍
12/13/2013 +3 days 🔍
01/08/2014 +26 days 🔍
06/04/2021 +2704 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: ipc,shm: fix shm_file deletion races
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2013-7026 (🔍)
GCVE (CVE): GCVE-0-2013-7026
GCVE (VulDB): GCVE-100-11491

OVAL: 🔍

SecurityFocus: 64312 - Linux Kernel 'ipc/shm.c' Multiple Denial of Service Vulnerabilities
OSVDB: 100836
Vulnerability Center: 42827 - Linux Kernel before 3.12.2 Local DoS Vulnerability via Crafted Application that Uses Shmctl IPC_RMID Operations, Medium

Misc.: 🔍
See also: 🔍

Entryinfo

Created: 12/13/2013 09:52
Updated: 06/04/2021 09:49
Changes: 12/13/2013 09:52 (78), 05/19/2017 10:37 (3), 06/04/2021 09:49 (3)
Complete: 🔍
Committer:
Cache ID: 216:A24:103

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