Linux Kernel 3.3.5 KVM resource management

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

A vulnerability has been found in Linux Kernel 3.3.5 (Operating System) and classified as problematic. This vulnerability affects an unknown part of the component KVM. 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 KVM implementation in the Linux kernel before 3.3.6 allows host OS users to cause a denial of service (NULL pointer dereference and host OS crash) by making a KVM_CREATE_IRQCHIP ioctl call after a virtual CPU already exists.

The weakness was released 05/10/2012 by Michael Ellerman as DSA-2469-1 as confirmed knowledge base article (Website). The advisory is available at debian.org. The vendor was not involved in the coordination of the public release. This vulnerability was named CVE-2012-1601 since 03/12/2012. The exploitation appears to be easy. Local access is required to approach this attack. A single authentication is necessary for exploitation. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 68527 (Oracle Linux 5 : kvm (ELSA-2012-0676)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Oracle Linux Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 166783 (SUSE Enterprise Linux Security Update for Linux Kernel (SUSE-SU-2014:0287-1)).

Upgrading to version 2.6.32-45 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The best possible mitigation is suggested to be patching the affected component. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (75556) and Tenable (68527). Entries connected to this vulnerability are available at 5383, 5384, 5571 and 5582.

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: 5.5
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
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: 68527
Nessus Name: Oracle Linux 5 : kvm (ELSA-2012-0676)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 892469
OpenVAS Name: Debian Security Advisory DSA 2469-1 (linux-2.6 - privilege escalation/denial of service
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: Kernel 2.6.32-45

Timelineinfo

03/12/2012 🔍
04/09/2012 +28 days 🔍
04/20/2012 +11 days 🔍
05/10/2012 +20 days 🔍
05/10/2012 +0 days 🔍
05/11/2012 +1 days 🔍
05/15/2012 +4 days 🔍
05/17/2012 +2 days 🔍
05/17/2012 +0 days 🔍
05/22/2012 +5 days 🔍
07/12/2013 +416 days 🔍
03/24/2021 +2812 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: DSA-2469-1
Researcher: Michael Ellerman
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2012-1601 (🔍)
OVAL: 🔍

X-Force: 75556
SecurityTracker: 1026897 - KVM Null Pointer Dereference in irqchip_in_kernel() Lets Local Users Deny Service
Vulnerability Center: 35118 - Linux Kernel Before 3.3.6 KVM Implementation Local Null Pointer Dereference Vulnerability, Medium
SecurityFocus: 53166 - Linux kernel fcaps Local Security Bypass Vulnerability
Secunia: 49098 - Debian update for linux-2.6, Less Critical
OSVDB: 81811

See also: 🔍

Entryinfo

Created: 05/15/2012 11:30
Updated: 03/24/2021 15:16
Changes: 05/15/2012 11:30 (78), 04/12/2017 12:00 (13), 03/24/2021 15:16 (3)
Complete: 🔍

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