Linux Kernel 2.6.16.9 kvm_vcpu_ioctl_x86_setup_mce memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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7.7$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in Linux Kernel 2.6.16.9. This vulnerability affects the function kvm_vcpu_ioctl_x86_setup_mce. The manipulation results in memory corruption. This vulnerability is identified as CVE-2009-4004. There is not any exploit available. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability was found in Linux Kernel 2.6.16.9 (Operating System). It has been classified as critical. Affected is the function kvm_vcpu_ioctl_x86_setup_mce. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Buffer overflow in the kvm_vcpu_ioctl_x86_setup_mce function in arch/x86/kvm/x86.c in the KVM subsystem in the Linux kernel before 2.6.32-rc7 allows local users to cause a denial of service (memory corruption) or possibly gain privileges via a KVM_X86_SETUP_MCE IOCTL request that specifies a large number of Machine Check Exception (MCE) banks.

The issue has been introduced in 03/20/2006. The weakness was released 11/19/2009 as confirmed git commit (GIT Repository). The advisory is shared for download at git.kernel.org. This vulnerability is traded as CVE-2009-4004 since 11/19/2009. 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.

It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 1340 days. During that time the estimated underground price was around $5k-$25k.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org.

The vulnerability is also documented in the databases at X-Force (54302), SecurityFocus (BID 37035†) and Secunia (SA37357†). Entries connected to this vulnerability are available at VDB-50859 and VDB-50857. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Version

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.6
VulDB Meta Temp Score: 8.1

VulDB Base Score: 9.3
VulDB Temp Score: 8.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: git.kernel.org

Timelineinfo

03/20/2006 🔍
11/16/2009 +1337 days 🔍
11/17/2009 +1 days 🔍
11/19/2009 +2 days 🔍
11/19/2009 +0 days 🔍
11/19/2009 +0 days 🔍
03/18/2015 +1945 days 🔍
08/28/2021 +2354 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2009-4004 (🔍)
GCVE (CVE): GCVE-0-2009-4004
GCVE (VulDB): GCVE-100-50856
X-Force: 54302
SecurityFocus: 37035 - Linux Kernel KVM 'KVM_MAX_MCE_BANKS' Memory Corruption Vulnerability
Secunia: 37357 - Linux Kernel Multiple Vulnerabilities, Less Critical
Vupen: ADV-2009-3267

See also: 🔍

Entryinfo

Created: 03/18/2015 15:15
Updated: 08/28/2021 00:49
Changes: 03/18/2015 15:15 (56), 04/14/2019 12:08 (8), 08/28/2021 00:49 (13)
Complete: 🔍
Cache ID: 216:603:103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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