Linux Kernel 3.9 net/vmw_vsock/af_vsock.c vsock_stream_sendmsg length information disclosure

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

Summaryinfo

A vulnerability was found in Linux Kernel 3.9 and classified as problematic. The impacted element is the function vsock_stream_sendmsg of the file net/vmw_vsock/af_vsock.c of the component Linux Kernel. Executing a manipulation of the argument length can lead to information disclosure. This vulnerability appears as CVE-2013-3237. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Linux Kernel 3.9 (Operating System). This vulnerability affects the function vsock_stream_sendmsg of the file net/vmw_vsock/af_vsock.c of the component Linux Kernel. The manipulation of the argument length with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. CVE summarizes:

The vsock_stream_sendmsg function in net/vmw_vsock/af_vsock.c in the Linux kernel before 3.9-rc7 does not initialize a certain length variable, 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 for download at lkml.org. This vulnerability was named CVE-2013-3237 since 04/21/2013. The exploitation appears to be easy. The attack needs to be approached locally. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1592.

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 (83699), SecurityFocus (BID 59392†), OSVDB (92658†) and Vulnerability Center (SBV-41593†). See VDB-8485, VDB-8484, VDB-8486 and VDB-8487 for similar entries. 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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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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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 🔍
09/23/2013 +152 days 🔍
05/11/2017 +1326 days 🔍

Sourcesinfo

Vendor: kernel.org

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

CVE: CVE-2013-3237 (🔍)
GCVE (CVE): GCVE-0-2013-3237
GCVE (VulDB): GCVE-100-8488
X-Force: 83699
SecurityFocus: 59392 - Linux Kernel CVE-2013-3237 Local Information Disclosure Vulnerability
OSVDB: 92658
Vulnerability Center: 41593 - Linux Kernel before 3.9-rc7 Local Information Disclosure Vulnerability via Crafted recvmsg or recvfrom System Call, Medium

See also: 🔍

Entryinfo

Created: 04/24/2013 11:30
Updated: 05/11/2017 09:05
Changes: 04/24/2013 11:30 (69), 05/11/2017 09:05 (3)
Complete: 🔍
Committer: olku
Cache ID: 216:335:103

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