Linux Kernel 2.6.32.51 x86_assign_hw_event numeric error

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

Summaryinfo

A vulnerability described as problematic has been identified in Linux Kernel 2.6.32.51. This impacts the function x86_assign_hw_event. The manipulation results in numeric error. This vulnerability was named CVE-2011-2521. There is no available exploit.

Detailsinfo

A vulnerability was found in Linux Kernel 2.6.32.51 (Operating System). It has been classified as critical. Affected is the function x86_assign_hw_event. 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 availability. CVE summarizes:

The x86_assign_hw_event function in arch/x86/kernel/cpu/perf_event.c in the Performance Events subsystem in the Linux kernel before 2.6.39 does not properly calculate counter values, which allows local users to cause a denial of service (panic) via the perf program.

The issue has been introduced in 12/03/2009. The weakness was presented 05/24/2012 by Arun Sharma (Website). The advisory is shared for download at github.com. This vulnerability is traded as CVE-2011-2521 since 06/15/2011. The exploitability is told to be easy. The attack needs to be approached locally. 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 903 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 68364 (Oracle Linux 6 : kernel (ELSA-2011-1350)), 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 155967 (Oracle Enterprise Linux Update for Kernel Security, Bug Fix, and Enhancement Update (ELSA-2011-1350)).

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 (68407), Tenable (68364), SecurityFocus (BID 48580†) and Vulnerability Center (SBV-35294†). See VDB-4416, VDB-4544, VDB-61074 and VDB-61073 for similar entries. Once again VulDB remains the best source for vulnerability data.

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: 6.2

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

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

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

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 68364
Nessus Name: Oracle Linux 6 : kernel (ELSA-2011-1350)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 870628
OpenVAS Name: RedHat Update for kernel RHSA-2011:1350-01
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: fc66c5210ec2539e800e87d7b3a985323c7be96e

Timelineinfo

12/03/2009 🔍
06/15/2011 +559 days 🔍
07/06/2011 +21 days 🔍
07/06/2011 +0 days 🔍
05/24/2012 +323 days 🔍
05/24/2012 +0 days 🔍
06/11/2012 +18 days 🔍
03/23/2015 +1015 days 🔍
12/02/2021 +2446 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: RHSA-2011:1350
Researcher: Arun Sharma
Status: Not defined
Confirmation: 🔍

CVE: CVE-2011-2521 (🔍)
GCVE (CVE): GCVE-0-2011-2521
GCVE (VulDB): GCVE-100-60828

OVAL: 🔍

X-Force: 68407
SecurityFocus: 48580 - Linux Kernel 'x86_assign_hw_event()' Local Denial of Service Vulnerability
Vulnerability Center: 35294 - Linux kernel Before 2.6.39 Local DoS Vulnerability via the Perf Page, Medium

See also: 🔍

Entryinfo

Created: 03/23/2015 16:50
Updated: 12/02/2021 06:59
Changes: 03/23/2015 16:50 (60), 04/13/2017 17:12 (14), 12/02/2021 06:44 (5), 12/02/2021 06:59 (2)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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