Linux Kernel up to 2.6.28.8 ecryptfs_write_metadata_to_contents numeric error

CVSS Meta Temp Score
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CTI Interest Score
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5.6$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Linux Kernel up to 2.6.28.8. The impacted element is the function ecryptfs_write_metadata_to_contents. The manipulation results in numeric error. This vulnerability is cataloged as CVE-2009-0787. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Linux Kernel up to 2.6.28.8 (Operating System). It has been classified as problematic. Affected is the function ecryptfs_write_metadata_to_contents. The manipulation with an unknown input leads to a numeric error vulnerability. CWE is classifying the issue as CWE-189. This is going to have an impact on confidentiality. CVE summarizes:

The ecryptfs_write_metadata_to_contents function in the eCryptfs functionality in the Linux kernel 2.6.28 before 2.6.28.9 uses an incorrect size when writing kernel memory to an eCryptfs file header, which triggers an out-of-bounds read and allows local users to obtain portions of kernel memory.

The bug was discovered 03/11/2009. The weakness was shared 03/24/2009 (Website). The advisory is available at securityfocus.com. This vulnerability is traded as CVE-2009-0787 since 03/04/2009. The exploitability is told to be easy. Local access is required to approach this attack. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit.

It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 89 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 43746 (CentOS 5 : kernel (CESA-2009:0473)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 155908 (Oracle Enterprise Linux Update for Kernel (ELSA-2009-0473)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (49355), Tenable (43746), SecurityFocus (BID 34216†), OSVDB (52860†) and Secunia (SA34422†). The entries VDB-45859, VDB-47847, VDB-47846 and VDB-47280 are related to this item. If you want to get best quality of vulnerability data, you may have to visit VulDB.

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: 5.6

VulDB Base Score: 6.2
VulDB Temp Score: 5.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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Exploitinginfo

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

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 43746
Nessus Name: CentOS 5 : kernel (CESA-2009:0473)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 880841
OpenVAS Name: CentOS Update for kernel CESA-2009:0473 centos5 i386
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Timelineinfo

12/25/2008 🔍
03/04/2009 +69 days 🔍
03/11/2009 +7 days 🔍
03/11/2009 +0 days 🔍
03/23/2009 +12 days 🔍
03/23/2009 +0 days 🔍
03/23/2009 +0 days 🔍
03/24/2009 +0 days 🔍
03/24/2009 +0 days 🔍
05/07/2009 +44 days 🔍
05/07/2009 +0 days 🔍
05/11/2009 +4 days 🔍
01/06/2010 +240 days 🔍
03/17/2015 +1896 days 🔍
09/03/2019 +1631 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: securityfocus.com⛔
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2009-0787 (🔍)
GCVE (CVE): GCVE-0-2009-0787
GCVE (VulDB): GCVE-100-47274

OVAL: 🔍

X-Force: 49355
SecurityFocus: 34216 - Linux Kernel 'ecryptfs_write_metadata_to_contents()' Information Disclosure Vulnerability
Secunia: 34422 - Linux Kernel Information Disclosure and Security Bypass, Less Critical
OSVDB: 52860 - Linux Kernel eCryptfs ecryptfs_write_metadata_to_contents Function Arbitrary Kernel Memory Disclosure
SecurityTracker: 1022177
Vulnerability Center: 21981 - Linux Kernel 2.6.28 - 2.6.28.8 eCryptfs Functionality Local Information Disclosure Vulnerability, Low
Vupen: ADV-2009-0802

See also: 🔍

Entryinfo

Created: 03/17/2015 23:38
Updated: 09/03/2019 11:16
Changes: 03/17/2015 23:38 (90), 09/03/2019 11:16 (3)
Complete: 🔍
Cache ID: 216:1B7:103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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