Linux Kernel 3.3/3.3.1 __nfs4_get_acl_uncached numeric error

CVSS Meta Temp Score
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CTI Interest Score
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5.7$0-$5k0.00

Summaryinfo

A vulnerability has been found in Linux Kernel 3.3/3.3.1 and classified as problematic. This affects the function __nfs4_get_acl_uncached. The manipulation leads to numeric error. This vulnerability is traded as CVE-2012-2375. Access to the local network is required for this attack to succeed. There is no exploit available. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Linux Kernel 3.3/3.3.1 (Operating System). This issue affects the function __nfs4_get_acl_uncached. The manipulation with an unknown input leads to a numeric error vulnerability. Using CWE to declare the problem leads to CWE-189. Impacted is availability. The summary by CVE is:

The __nfs4_get_acl_uncached function in fs/nfs/nfs4proc.c in the NFSv4 implementation in the Linux kernel before 3.3.2 uses an incorrect length variable during a copy operation, which allows remote NFS servers to cause a denial of service (OOPS) by sending an excessive number of bitmap words in an FATTR4_ACL reply. NOTE: this vulnerability exists because of an incomplete fix for CVE-2011-4131.

The weakness was shared 06/13/2012 (GitHub Repository). It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2012-2375 since 04/19/2012. The exploitation is known to be difficult. The attack needs to be done within the local network. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 71490 (Scientific Linux Security Update : kernel on SL6.x i386/x86_64), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Scientific Linux Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 350598 (Amazon Linux Security Advisory for kernel,nvidia: ALAS-2013-148).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org.

The vulnerability is also documented in the databases at Tenable (71490), SecurityFocus (BID 53615†) and Vulnerability Center (SBV-35086†). The entries VDB-61169 and VDB-63237 are related to this item. Be aware that VulDB is the high quality 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: 6.5
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.5
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Numeric error
CWE: CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 71490
Nessus Name: Scientific Linux Security Update : kernel on SL6.x i386/x86_64
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 881552
OpenVAS Name: CentOS Update for kernel CESA-2012:1580 centos6
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 20e0fa98b751facf9a1101edaefbc19c82616a68

Timelineinfo

04/19/2012 🔍
05/18/2012 +29 days 🔍
05/19/2012 +1 days 🔍
05/20/2012 +1 days 🔍
06/13/2012 +24 days 🔍
06/13/2012 +0 days 🔍
12/17/2013 +552 days 🔍
03/23/2015 +461 days 🔍
12/03/2021 +2447 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: 20e0fa98b751facf9a1101edaefbc19c82616a68
Status: Not defined
Confirmation: 🔍

CVE: CVE-2012-2375 (🔍)
GCVE (CVE): GCVE-0-2012-2375
GCVE (VulDB): GCVE-100-60959

OVAL: 🔍

SecurityFocus: 53615 - Linux Kernel NFS Client 'decode_getacl()' Incomplete Fix Remote Denial of Service Vulnerability
Vulnerability Center: 35086 - Linux Kernel <3.3.2 Remote DoS Vulnerability in NFSv4 Implementation, Medium

See also: 🔍

Entryinfo

Created: 03/23/2015 16:50
Updated: 12/03/2021 20:41
Changes: 03/23/2015 16:50 (64), 04/15/2019 12:49 (11), 12/03/2021 20:26 (3), 12/03/2021 20:33 (1), 12/03/2021 20:41 (1)
Complete: 🔍
Cache ID: 216:17F:103

Be aware that VulDB is the high quality source for vulnerability data.

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