Linux Kernel 2.6.18 do_open_permission access control

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

Summaryinfo

A vulnerability classified as problematic has been found in Linux Kernel 2.6.18. This impacts the function do_open_permission. The manipulation leads to access control. This vulnerability is uniquely identified as CVE-2009-3286. No exploit exists. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability was found in Linux Kernel 2.6.18 (Operating System). It has been rated as problematic. This issue affects the function do_open_permission. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-264. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

NFSv4 in the Linux kernel 2.6.18, and possibly other versions, does not properly clean up an inode when an O_EXCL create fails, which causes files to be created with insecure settings such as setuid bits, and possibly allows local users to gain privileges, related to the execution of the do_open_permission function even when a create fails.

The issue has been introduced in 09/20/2006. The weakness was disclosed 09/22/2009 as confirmed git commit (GIT Repository). It is possible to read the advisory at git.kernel.org. The identification of this vulnerability is CVE-2009-3286. The exploitation is known to be easy. Attacking locally is a requirement. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 1098 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 67068 (CentOS 5 : kernel (CESA-2009:1548)), 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 118072 (VMware ESX Service Console Third Party Updates (VMSA-2010-0009)).

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 (67068) and Vulnerability Center (SBV-23875†). The entries VDB-2766, VDB-40214 and VDB-50485 are pretty similar. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.7

VulDB Base Score: 5.9
VulDB Temp Score: 5.7
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: 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: 67068
Nessus Name: CentOS 5 : kernel (CESA-2009:1548)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 66098
OpenVAS Name: Debian Security Advisory DSA 1915-1 (linux-2.6)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: git.kernel.org

Timelineinfo

09/20/2006 🔍
09/22/2009 +1097 days 🔍
09/22/2009 +0 days 🔍
09/22/2009 +0 days 🔍
09/22/2009 +0 days 🔍
10/27/2009 +35 days 🔍
03/18/2015 +1968 days 🔍
08/23/2021 +2350 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2009-3286 (🔍)
GCVE (CVE): GCVE-0-2009-3286
GCVE (VulDB): GCVE-100-50147

OVAL: 🔍

Vulnerability Center: 23875 - Linux kernel 2.6.18 NFSv4 Local DoS Vulnerability when O_EXCL Creation Fails, High

See also: 🔍

Entryinfo

Created: 03/18/2015 15:15
Updated: 08/23/2021 06:31
Changes: 03/18/2015 15:15 (61), 02/16/2017 10:04 (8), 08/23/2021 06:21 (4), 08/23/2021 06:31 (1)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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