Linux Kernel 2.6.0 ext3 File System xattr.c denial of service

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

A vulnerability, which was classified as problematic, was found in Linux Kernel 2.6.0 (Operating System). Affected is an unknown code block of the file xattr.c of the component ext3 File System. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on integrity. CVE summarizes:

xattr.c in the ext2 and ext3 file system code for Linux kernel 2.6 does not properly compare the name_index fields when sharing xattr blocks, which could prevent default ACLs from being applied.

The bug was discovered 05/18/2005. The weakness was published 09/06/2005 (Website). The advisory is shared for download at novell.com. This vulnerability is traded as CVE-2005-2801 since 09/06/2005. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 628 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 21943 (CentOS 4 : kernel (CESA-2005:514)), 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 117811 (CentOS Security Update for Kernel (CESA-2005:514)).

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 (21808) and Tenable (21943). Similar entries are available at 1233, 1234, 1231 and 1232.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

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CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
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CVSSv2info

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Exploitinginfo

Class: Denial of service
CWE: CWE-404
ATT&CK: T1499

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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EPSS Percentile: 🔍

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Nessus ID: 21943
Nessus Name: CentOS 4 : kernel (CESA-2005:514)
Nessus File: 🔍
Nessus Risk: 🔍
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OpenVAS ID: 56013
OpenVAS Name: Debian Security Advisory DSA 921-1 (kernel-source-2.4.27)
OpenVAS File: 🔍
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Qualys ID: 🔍
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Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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Timelineinfo

12/18/2003 🔍
02/16/2005 +426 days 🔍
05/18/2005 +91 days 🔍
09/06/2005 +111 days 🔍
09/06/2005 +0 days 🔍
09/06/2005 +0 days 🔍
09/09/2005 +3 days 🔍
10/05/2005 +26 days 🔍
11/14/2005 +40 days 🔍
07/05/2006 +233 days 🔍
03/11/2015 +3171 days 🔍
06/11/2019 +1553 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: novell.com
Status: Not defined

CVE: CVE-2005-2801 (🔍)
OVAL: 🔍

X-Force: 21808
Vulnerability Center: 9621 - Linux Kernel Ext2 \x26 Ext3 File Systems Access Bypass, High
SecurityFocus: 14793 - Linux Kernel EXT2/EXT3 File System Access Control Bypass Vulnerability
Secunia: 14295 - Linux Kernel Multiple Vulnerabilities, Moderately Critical
OSVDB: 19314 - CVE-2005-2801 - Linux - Security Bypass Issue

See also: 🔍

Entryinfo

Created: 03/11/2015 23:39
Updated: 06/11/2019 11:53
Changes: 03/11/2015 23:39 (79), 06/11/2019 11:53 (7)
Complete: 🔍

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