Linux Kernel prior 3.2.10 CIFS cifs_lookup access control

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Linux Kernel. This affects the function cifs_lookup of the component CIFS. Executing a manipulation can lead to access control. This vulnerability is tracked as CVE-2012-1090. No exploit exists. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability classified as problematic was found in Linux Kernel (Operating System). This vulnerability affects the function cifs_lookup of the component CIFS. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect availability. CVE summarizes:

The cifs_lookup function in fs/cifs/dir.c in the Linux kernel before 3.2.10 allows local users to cause a denial of service (OOPS) via attempted access to a special file, as demonstrated by a FIFO.

The weakness was disclosed 02/23/2012 as not defined mailinglist post (Website). The advisory is shared for download at thread.gmane.org. This vulnerability was named CVE-2012-1090 since 02/14/2012. The attack needs to be approached locally. A single authentication is necessary for exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1068.

The vulnerability scanner Nessus provides a plugin with the ID 68671 (Oracle Linux 5 / 6 : Unbreakable Enterprise kernel (ELSA-2012-2008)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Oracle Linux Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 156319 (Oracle Enterprise Linux Update for Kernel Security, Bug Fix and Enhancement Update (ELSA-2012-0481)).

Upgrading to version 3.2.10 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at thread.gmane.org. The best possible mitigation is suggested to be patching the affected component. A possible mitigation has been published 15 hours after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (73519), Tenable (68671), SecurityFocus (BID 52197†), OSVDB (79672†) and Secunia (SA47482†). The entries VDB-4553, VDB-4669 and VDB-4958 are pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
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: 68671
Nessus Name: Oracle Linux 5 / 6 : Unbreakable Enterprise kernel (ELSA-2012-2008)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 892443
OpenVAS Name: Debian Security Advisory DSA 2443-1 (linux-2.6 - privilege escalation/denial of service
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: Kernel 3.2.10
Patch: thread.gmane.org

Timelineinfo

01/12/2012 🔍
02/14/2012 +33 days 🔍
02/23/2012 +9 days 🔍
02/23/2012 +0 days 🔍
02/23/2012 +0 days 🔍
02/28/2012 +4 days 🔍
03/01/2012 +2 days 🔍
05/15/2012 +75 days 🔍
05/17/2012 +2 days 🔍
07/12/2013 +421 days 🔍
03/21/2021 +2809 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: thread.gmane.org
Status: Not defined
Confirmation: 🔍

CVE: CVE-2012-1090 (🔍)
GCVE (CVE): GCVE-0-2012-1090
GCVE (VulDB): GCVE-100-4672

OVAL: 🔍

X-Force: 73519
SecurityFocus: 52197 - Linux Kernel CVE-2012-1090 CIFS 'umount' Local Denial of Service Vulnerability
Secunia: 47482 - Linux Kernel KVM "syscall" Emulation and CIFS Special Files Lookup Denial of Ser, Not Critical
OSVDB: 79672
Vulnerability Center: 35067 - Linux Kernel 2.6.31-2.6.39 CIFS \x27umount\x27 Operation Local Denial of Service Vulnerability, Medium

See also: 🔍

Entryinfo

Created: 03/01/2012 01:00
Updated: 03/21/2021 08:04
Changes: 03/01/2012 01:00 (77), 04/11/2017 22:13 (10), 03/21/2021 07:59 (11), 03/21/2021 08:04 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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