Linux Kernel 3.9 net/netrom/af_netrom.c nr_recvmsg information disclosure

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 identified as problematic has been detected in Linux Kernel 3.9. Affected by this issue is the function nr_recvmsg of the file net/netrom/af_netrom.c. Performing a manipulation results in information disclosure. This vulnerability was named CVE-2013-3232. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel 3.9 (Operating System). It has been classified as problematic. This affects the function nr_recvmsg of the file net/netrom/af_netrom.c. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. The summary by CVE is:

The nr_recvmsg function in net/netrom/af_netrom.c in the Linux kernel before 3.9-rc7 does not initialize a certain data structure, which allows local users to obtain sensitive information from kernel stack memory via a crafted recvmsg or recvfrom system call.

The weakness was presented 04/07/2013 by Mathias Krause as not defined mailinglist post (Maillist). The advisory is shared at lkml.org. This vulnerability is uniquely identified as CVE-2013-3232 since 04/21/2013. 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. MITRE ATT&CK project uses the attack technique T1592 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 66248 (Fedora 18 : kernel-3.8.8-203.fc18 (2013-6537)), 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 166553 (SUSE Enterprise Linux Security update for Linux kernel (SUSE-SU-2013:1832-1)).

Upgrading to version 3.9-rc7 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 (83694), Tenable (66248), SecurityFocus (BID 59394†), OSVDB (92663†) and Secunia (SA53754†). See VDB-8485, VDB-8484, VDB-8486 and VDB-8487 for similar entries. 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: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
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: 66248
Nessus Name: Fedora 18 : kernel-3.8.8-203.fc18 (2013-6537)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 865961
OpenVAS Name: Fedora Update for kernel FEDORA-2013-10695
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 3.9-rc7
Patch: git.kernel.org

Timelineinfo

04/07/2013 🔍
04/07/2013 +0 days 🔍
04/07/2013 +0 days 🔍
04/14/2013 +7 days 🔍
04/21/2013 +7 days 🔍
04/22/2013 +1 days 🔍
04/24/2013 +2 days 🔍
06/17/2013 +54 days 🔍
08/01/2013 +45 days 🔍
05/10/2021 +2839 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: lkml.org
Researcher: Mathias Krause
Status: Not defined
Confirmation: 🔍

CVE: CVE-2013-3232 (🔍)
GCVE (CVE): GCVE-0-2013-3232
GCVE (VulDB): GCVE-100-8493

OVAL: 🔍

X-Force: 83694
SecurityFocus: 59394 - Linux Kernel CVE-2013-3232 Local Information Disclosure Vulnerability
Secunia: 53754 - Ubuntu update for kernel, Less Critical
OSVDB: 92663
Vulnerability Center: 40787 - Linux Kernel 3.9 Until 3.9-rc7 Local Leakage of Sensitive Information via a Maliciously Crafted recvmsg or recvfrom System Call, Medium

See also: 🔍

Entryinfo

Created: 04/24/2013 11:42
Updated: 05/10/2021 08:44
Changes: 04/24/2013 11:42 (80), 05/07/2017 11:31 (5), 05/10/2021 08:44 (3)
Complete: 🔍
Committer: olku
Cache ID: 216:C8F: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 ▸

Interested in the pricing of exploits?

See the underground prices here!