Linux Kernel 2.6.28.2 ext4_fill_flex_info numeric error

CVSS Meta Temp Score
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CTI Interest Score
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7.5$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Linux Kernel 2.6.28.2. This affects the function ext4_fill_flex_info. Executing a manipulation can lead to numeric error. This vulnerability is registered as CVE-2009-4307. No exploit is available.

Detailsinfo

A vulnerability classified as critical was found in Linux Kernel 2.6.28.2 (Operating System). This vulnerability affects the function ext4_fill_flex_info. The manipulation with an unknown input leads to a numeric error vulnerability. The CWE definition for the vulnerability is CWE-189. As an impact it is known to affect availability. CVE summarizes:

The ext4_fill_flex_info function in fs/ext4/super.c in the Linux kernel before 2.6.32-git6 allows user-assisted remote attackers to cause a denial of service (divide-by-zero error and panic) via a malformed ext4 filesystem containing a super block with a large FLEX_BG group size (aka s_log_groups_per_flex value).

The issue has been introduced in 12/25/2008. The weakness was published 12/12/2009 (Website). The advisory is available at kernel.org. This vulnerability was named CVE-2009-4307 since 12/12/2009. The attack can be initiated remotely. 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 352 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 68666 (Oracle Linux 6 : kernel (ELSA-2012-1580)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Oracle Linux Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 165246 (SUSE Security Update for Kernel (SUSE-SA:2010:005)).

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 Tenable (68666), SecurityFocus (BID 53414†), Secunia (SA37658†) and Vulnerability Center (SBV-24544†). Similar entries are available at VDB-51131, VDB-51127 and VDB-61169. 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: 7.5
VulDB Meta Temp Score: 7.5

VulDB Base Score: 7.5
VulDB Temp Score: 7.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 68666
Nessus Name: Oracle Linux 6 : kernel (ELSA-2012-1580)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
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: 🔍
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Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/25/2008 🔍
12/10/2009 +350 days 🔍
12/12/2009 +2 days 🔍
12/12/2009 +0 days 🔍
12/12/2009 +0 days 🔍
12/12/2009 +0 days 🔍
01/11/2010 +30 days 🔍
04/04/2012 +814 days 🔍
07/12/2013 +464 days 🔍
03/18/2015 +614 days 🔍
08/28/2021 +2355 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: kernel.org
Status: Not defined
Confirmation: 🔍

CVE: CVE-2009-4307 (🔍)
GCVE (CVE): GCVE-0-2009-4307
GCVE (VulDB): GCVE-100-51130

OVAL: 🔍
IAVM: 🔍

SecurityFocus: 53414 - Linux Kernel EXT4 'ext4_fill_flex_info()' Local Denial of Service Vulnerability
Secunia: 37658 - Linux Kernel Ext4 Multiple Vulnerabilities, Less Critical
Vulnerability Center: 24544 - Linux kernel < 2.6.32-git6 Remote DoS Vulnerability via Large FLEX_BG Group Size, High

See also: 🔍

Entryinfo

Created: 03/18/2015 15:15
Updated: 08/28/2021 15:49
Changes: 03/18/2015 15:15 (69), 02/19/2017 21:42 (12), 08/28/2021 15:49 (3)
Complete: 🔍
Cache ID: 216:663:103

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