Linux Kernel 2.6.16.9 gfs2_fallocate resource management

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.2$0-$5k0.00

A vulnerability has been found in Linux Kernel 2.6.16.9 (Operating System) and classified as critical. This vulnerability affects the function gfs2_fallocate. The manipulation with an unknown input leads to a resource management vulnerability. The CWE definition for the vulnerability is CWE-399. As an impact it is known to affect availability. CVE summarizes:

The gfs2_fallocate function in fs/gfs2/file.c in the Linux kernel before 3.0-rc1 does not ensure that the size of a chunk allocation is a multiple of the block size, which allows local users to cause a denial of service (BUG and system crash) by arranging for all resource groups to have too little free space.

The issue has been introduced in 03/20/2006. The weakness was released 07/28/2011 as Bug 720861 as not defined bug report (Bugzilla). The advisory is available at bugzilla.redhat.com. This vulnerability was named CVE-2011-2689. The exploitation appears to be easy. Local access is required to approach this attack. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 1956 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 56265 (CentOS 5 : kernel (CESA-2011:1065)), 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 119658 (CentOS Security Update for kernel (CESA-2011:1065)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at X-Force (68557) and Tenable (56265). Entries connected to this vulnerability are available at 60062 and 66002.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 6.2

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

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
unlockunlockunlockunlockunlockunlock
unlockunlockunlockunlockunlockunlock
unlockunlockunlockunlockunlockunlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Dayunlockunlockunlockunlock
Todayunlockunlockunlockunlock

Nessus ID: 56265
Nessus Name: CentOS 5 : kernel (CESA-2011:1065)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 880988
OpenVAS Name: CentOS Update for kernel CESA-2011:1065 centos5 i386
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Patch: 6905d9e4dda6112f007e9090bca80507da158e63

Timelineinfo

03/20/2006 🔍
04/26/2011 +1863 days 🔍
07/11/2011 +75 days 🔍
07/14/2011 +3 days 🔍
07/27/2011 +13 days 🔍
07/28/2011 +1 days 🔍
07/28/2011 +0 days 🔍
03/23/2015 +1334 days 🔍
11/15/2021 +2429 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: Bug 720861
Status: Not defined
Confirmation: 🔍

CVE: CVE-2011-2689 (🔍)
OVAL: 🔍
IAVM: 🔍

X-Force: 68557
Vulnerability Center: 32438 - Linux Kernel 2.6-2.6.39 Global File System 2 Malfunction Allows Local DoS Vulnerability, Medium
SecurityFocus: 48677 - Linux Kernel GFS2 'fs/gfs2/file.c' Local Denial of Service Vulnerability
Secunia: 45193

See also: 🔍

Entryinfo

Created: 03/23/2015 16:50
Updated: 11/15/2021 17:10
Changes: 03/23/2015 16:50 (74), 03/28/2017 12:35 (2), 11/15/2021 17:04 (7), 11/15/2021 17:10 (1)
Complete: 🔍

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Want to stay up to date on a daily basis?

Enable the mail alert feature now!