Linux Kernel 2.6.16.9 ldm_parse_vmdb input validation

CVSS Meta Temp Score
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CTI Interest Score
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6.2$0-$5k0.00

A vulnerability classified as critical has been found in Linux Kernel 2.6.16.9 (Operating System). This affects the function ldm_parse_vmdb. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on availability. The summary by CVE is:

The ldm_parse_vmdb function in fs/partitions/ldm.c in the Linux kernel before 2.6.38-rc6-git6 does not validate the VBLK size value in the VMDB structure in an LDM partition table, which allows local users to cause a denial of service (divide-by-zero error and OOPS) via a crafted partition table.

The issue has been introduced in 03/20/2006. The weakness was published 03/01/2011 by Timo Warns (Website). It is possible to read the advisory at spinics.net. This vulnerability is uniquely identified as CVE-2011-1012 since 02/14/2011. The exploitability is told to be easy. Attacking locally is a requirement. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/18/2021).

The vulnerability was handled as a non-public zero-day exploit for at least 1807 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 55686 (SuSE 11.1 Security Update : Linux kernel (SAT Patch Numbers 4884 / 4888 / 4889)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 165562 (SUSE Enterprise Linux Security Update Linux Kernel (SUSE-SA:2011:026)).

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 (65644) and Tenable (55686). Similar entries are available at 52270, 56656, 56654 and 61067.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

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

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VulDB Base Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
ATT&CK: Unknown

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 55686
Nessus Name: SuSE 11.1 Security Update : Linux kernel (SAT Patch Numbers 4884 / 4888 / 4889)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 69970
OpenVAS Name: Debian Security Advisory DSA 2264-1 (linux-2.6)
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: 294f6cf48666825d23c9372ef37631232746e40d

Timelineinfo

03/20/2006 🔍
02/14/2011 +1792 days 🔍
02/22/2011 +8 days 🔍
02/23/2011 +1 days 🔍
02/25/2011 +2 days 🔍
03/01/2011 +4 days 🔍
03/01/2011 +0 days 🔍
05/23/2011 +83 days 🔍
07/26/2011 +64 days 🔍
03/20/2015 +1333 days 🔍
10/18/2021 +2404 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: USN-1146-1
Researcher: Timo Warns
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2011-1012 (🔍)
OVAL: 🔍

X-Force: 65644
SecurityTracker: 1025127 - Linux Kernel Divide By Zero Error in ldm_get_vblks() Lets Physically Local Users Deny Service
Vulnerability Center: 31532 - Linux kernel <2.6.38-rc6-git6 Local Denial of Service Vulnerability via a Crafted Partition Table, Low
SecurityFocus: 46512 - Linux Kernel 'fs/partitions/ldm.c' Buffer Overflow and Denial of Service Vulnerabilities

See also: 🔍

Entryinfo

Created: 03/20/2015 16:16
Updated: 10/18/2021 10:36
Changes: 03/20/2015 16:16 (65), 03/23/2017 07:32 (16), 10/18/2021 10:30 (4), 10/18/2021 10:36 (1)
Complete: 🔍

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