Linux Kernel 3.2.53/3.4.72/3.10.22/3.12.3 socket.c mISDN_sock_recvmsg input validation

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

A vulnerability, which was classified as problematic, was found in Linux Kernel 3.2.53/3.4.72/3.10.22/3.12.3 (Operating System). This affects the function mISDN_sock_recvmsg of the file drivers/isdn/mISDN/socket.c. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on confidentiality. The summary by CVE is:

The mISDN_sock_recvmsg function in drivers/isdn/mISDN/socket.c in the Linux kernel before 3.12.4 does not ensure that a certain length value is consistent with the size of an associated data structure, which allows local users to obtain sensitive information from kernel memory via a (1) recvfrom, (2) recvmmsg, or (3) recvmsg system call.

The weakness was disclosed 11/18/2013 by Hannes Frederic Sowa as Linux kernel: net: uninitialised memory leakage as not defined mailinglist post (oss-sec). The advisory is shared at seclists.org. This vulnerability is uniquely identified as CVE-2013-7266 since 01/05/2014. The exploitability is told to be easy. An attack has to be approached locally. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 71936 (Mandriva Linux Security Advisory : kernel (MDVSA-2014:001)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Mandriva Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 195763 (Ubuntu Security Notification for Linux Vulnerabilities (USN-2109-1)).

Upgrading to version 3.2.54, 3.4.73, 3.10.23 or 3.12.4 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 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 (90127) and Tenable (71936). The entries 11336, 11507, 11712 and 11755 are pretty similar.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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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: 🔍
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Exploitinginfo

Class: Input validation
CWE: CWE-20
ATT&CK: Unknown

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 71936
Nessus Name: Mandriva Linux Security Advisory : kernel (MDVSA-2014:001)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 841713
OpenVAS Name: Ubuntu Update for linux USN-2109-1
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: Kernel 3.2.54/3.4.73/3.10.23/3.12.4
Patch: git.kernel.org

Timelineinfo

11/18/2013 🔍
11/18/2013 +0 days 🔍
01/05/2014 +48 days 🔍
01/06/2014 +1 days 🔍
01/06/2014 +0 days 🔍
01/06/2014 +0 days 🔍
01/08/2014 +2 days 🔍
01/09/2014 +1 days 🔍
02/17/2014 +39 days 🔍
06/04/2021 +2664 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: Linux kernel: net: uninitialised memory leakage
Researcher: Hannes Frederic Sowa
Status: Not defined
Confirmation: 🔍

CVE: CVE-2013-7266 (🔍)
OVAL: 🔍

X-Force: 90127
Vulnerability Center: 43306 - Linux Kernel before 3.12.4 Local Information Disclosure Vulnerability in mISDN_sock_recvmsg(), Medium
SecurityFocus: 64743 - Linux Kernel 'drivers/isdn/mISDN/socket.c' Local Information Disclosure Vulnerability
Secunia: 55882 - Linux Kernel "recvmsg()" and "recvfrom()" Information Disclosure Weakn, Not Critical
OSVDB: 101786

See also: 🔍

Entryinfo

Created: 01/09/2014 09:45
Updated: 06/04/2021 18:18
Changes: 01/09/2014 09:45 (80), 05/21/2017 14:05 (6), 06/04/2021 18:18 (3)
Complete: 🔍
Committer: olku

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