Linux Kernel 3.9 net/nfc/llcp/sock.c llcp_sock_recvmsg length information disclosure

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

Summaryinfo

A vulnerability categorized as problematic has been discovered in Linux Kernel 3.9. Affected by this vulnerability is the function llcp_sock_recvmsg of the file net/nfc/llcp/sock.c of the component Linux Kernel. Such manipulation of the argument length leads to information disclosure. This vulnerability is uniquely identified as CVE-2013-3233. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel 3.9 (Operating System) and classified as problematic. Affected by this issue is the function llcp_sock_recvmsg of the file net/nfc/llcp/sock.c of the component Linux Kernel. The manipulation of the argument length with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. CVE summarizes:

The llcp_sock_recvmsg function in net/nfc/llcp/sock.c in the Linux kernel before 3.9-rc7 does not initialize a certain length variable and 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 disclosed 04/07/2013 by Mathias Krause as not defined mailinglist post (Maillist). The advisory is shared for download at lkml.org. This vulnerability is handled as CVE-2013-3233 since 04/21/2013. The exploitation is known to be easy. The attack needs to be approached locally. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1592.

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.

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 (83695), Tenable (66248), SecurityFocus (BID 59396†), OSVDB (92662†) and Secunia (SA53647†). The entries VDB-8485, VDB-8484, VDB-8486 and VDB-8487 are pretty similar. Once again VulDB remains the best source for 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

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: 🔍

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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: 🔍

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 🔍
05/27/2013 +33 days 🔍
05/31/2013 +4 days 🔍
05/10/2021 +2901 days 🔍

Sourcesinfo

Vendor: kernel.org

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

CVE: CVE-2013-3233 (🔍)
GCVE (CVE): GCVE-0-2013-3233
GCVE (VulDB): GCVE-100-8492

OVAL: 🔍

X-Force: 83695
SecurityFocus: 59396 - Linux Kernel CVE-2013-3233 Local Information Disclosure Vulnerability
Secunia: 53647 - Ubuntu update for kernel, Moderately Critical
OSVDB: 92662
Vulnerability Center: 39726 - Linux Kernel Before 3.9-rc7 \x27llcp_sock_recvmsg\x27 Function Allows Local Information Disclosure Vulnerability, Low

See also: 🔍

Entryinfo

Created: 04/24/2013 11:41
Updated: 05/10/2021 08:43
Changes: 04/24/2013 11:41 (81), 04/30/2017 12:50 (4), 05/10/2021 08:43 (3)
Complete: 🔍
Committer: olku
Cache ID: 216::103

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