Linux Kernel up to 2.6.28.10 encode_share_access denial of service

CVSS Meta Temp Score
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CTI Interest Score
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5.8$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 2.6.28.10 and classified as problematic. Affected by this vulnerability is the function encode_share_access. Executing a manipulation can lead to denial of service. This vulnerability is tracked as CVE-2011-4324. The attack is restricted to local execution. No exploit exists.

Detailsinfo

A vulnerability was found in Linux Kernel up to 2.6.28.10 (Operating System). It has been declared as problematic. This vulnerability affects the function encode_share_access. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. CVE summarizes:

The encode_share_access function in fs/nfs/nfs4xdr.c in the Linux kernel before 2.6.29 allows local users to cause a denial of service (BUG and system crash) by using the mknod system call with a pathname on an NFSv4 filesystem.

The issue has been introduced in 12/25/2008. The weakness was disclosed 06/21/2012 (GitHub Repository). The advisory is shared for download at github.com. This vulnerability was named CVE-2011-4324 since 11/04/2011. 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 vulnerability was handled as a non-public zero-day exploit for at least 1274 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 57485 (CentOS 5 : kernel (CESA-2012:0007)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 165479 (SUSE Enterprise Linux Security Update for Linux Kernel (SUSE-SU-2012:0736-1)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at X-Force (71500), Tenable (57485), SecurityFocus (BID 50798†) and Vulnerability Center (SBV-35638†). The entries VDB-4543, VDB-4544, VDB-4545 and VDB-60026 are pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

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: 5.8

VulDB Base Score: 6.2
VulDB Temp Score: 5.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
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: 57485
Nessus Name: CentOS 5 : kernel (CESA-2012:0007)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 881222
OpenVAS Name: CentOS Update for kernel CESA-2012:0007 centos5
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Patch: dc0b027dfadfcb8a5504f7d8052754bf8d501ab9

Timelineinfo

12/25/2008 🔍
11/04/2011 +1044 days 🔍
11/29/2011 +25 days 🔍
06/21/2012 +205 days 🔍
06/21/2012 +0 days 🔍
07/24/2012 +33 days 🔍
03/23/2015 +972 days 🔍
12/05/2021 +2449 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: RHSA-2011:1212
Status: Not defined
Confirmation: 🔍

CVE: CVE-2011-4324 (🔍)
GCVE (CVE): GCVE-0-2011-4324
GCVE (VulDB): GCVE-100-61072

OVAL: 🔍
IAVM: 🔍

X-Force: 71500
SecurityFocus: 50798
Vulnerability Center: 35638 - Linux Kernel Before 2.6.29 Local Denial of Service Vulnerability, Medium

See also: 🔍

Entryinfo

Created: 03/23/2015 16:50
Updated: 12/05/2021 09:42
Changes: 03/23/2015 16:50 (61), 04/19/2017 10:31 (12), 12/05/2021 09:40 (4), 12/05/2021 09:42 (2)
Complete: 🔍
Cache ID: 216:0A4:103

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