Linux Kernel 3.2.53/3.4.72/3.10.22/3.12.3 net/netrom/af_netrom.c nr_recvmsg input validation

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.9$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel 3.2.53/3.4.72/3.10.22/3.12.3. It has been classified as problematic. The affected element is the function nr_recvmsg of the file net/netrom/af_netrom.c. The manipulation leads to input validation. This vulnerability is referenced as CVE-2013-7269. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Linux Kernel 3.2.53/3.4.72/3.10.22/3.12.3 (Operating System). This issue affects the function nr_recvmsg of the file net/netrom/af_netrom.c. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality. The summary by CVE is:

The nr_recvmsg function in net/netrom/af_netrom.c in the Linux kernel before 3.12.4 updates a certain length value without ensuring that an associated data structure has been initialized, 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 published 11/21/2013 by Hannes Frederic Sowa as Linux kernel: net: memory leak in recvmsg handlermsg_name & msg_namelen logic as not defined mailinglist post (oss-sec). The advisory is shared at seclists.org. The identification of this vulnerability is CVE-2013-7269 since 11/04/2013. 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 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 (90130), Tenable (71936), SecurityFocus (BID 64742†), OSVDB (101804†) and Secunia (SA55882†). Similar entries are available at VDB-11507, VDB-11712, VDB-11755 and VDB-11756. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Vendor

Name

Version

License

Website

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

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

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: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

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

11/04/2013 🔍
11/21/2013 +17 days 🔍
11/21/2013 +0 days 🔍
01/06/2014 +46 days 🔍
01/06/2014 +0 days 🔍
01/06/2014 +0 days 🔍
01/06/2014 +0 days 🔍
01/09/2014 +3 days 🔍
02/17/2014 +39 days 🔍
06/04/2021 +2664 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: Linux kernel: net: memory leak in recvmsg handlermsg_name & msg_namelen logic
Researcher: Hannes Frederic Sowa
Status: Not defined
Confirmation: 🔍

CVE: CVE-2013-7269 (🔍)
GCVE (CVE): GCVE-0-2013-7269
GCVE (VulDB): GCVE-100-11765

OVAL: 🔍

X-Force: 90130
SecurityFocus: 64742 - Linux Kernel 'net/netrom/af_netrom.c' Local Information Disclosure Vulnerability
Secunia: 55882 - Linux Kernel "recvmsg()" and "recvfrom()" Information Disclosure Weakn, Not Critical
OSVDB: 101804
Vulnerability Center: 43309 - Linux Kernel before 3.12.4 Local Information Disclosure Vulnerability in nr_recvmsg(), Medium

See also: 🔍

Entryinfo

Created: 01/09/2014 10:30
Updated: 06/04/2021 18:41
Changes: 01/09/2014 10:30 (80), 05/21/2017 14:06 (6), 06/04/2021 18:41 (3)
Complete: 🔍
Committer: olku
Cache ID: 216:D88:103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Want to know what is going to be exploited?

We predict KEV entries!