CVEdetails.com the ultimate security vulnerability data source
(e.g.: CVE-2009-1234 or 2010-1234 or 20101234)
Log In   Register
  Take a third party risk management course for FREE
Vulnerability Feeds & WidgetsNew   www.itsecdb.com  

Vulnerability Details : CVE-2009-4031

The do_insn_fetch function in arch/x86/kvm/emulate.c in the x86 emulator in the KVM subsystem in the Linux kernel before 2.6.32-rc8-next-20091125 tries to interpret instructions that contain too many bytes to be valid, which allows guest OS users to cause a denial of service (increased scheduling latency) on the host OS via unspecified manipulations related to SMP support.
Publish Date : 2009-11-29 Last Update Date : 2018-11-16
Search Twitter   Search YouTube   Search Google

- CVSS Scores & Vulnerability Types

CVSS Score
7.8
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of Service
CWE ID 20

- Additional Vendor Supplied Data

Vendor Impact CVSS Score CVSS Vector Report Date Publish Date
Redhat moderate
2.1
AV:L/AC:L/Au:N/C:N/I:N/A:P 2009-11-25 2009-11-24
If you are a vendor and you have additional data which can be automatically imported into our database, please contact admin @ cvedetails.com

- Related OVAL Definitions

Title Definition Id Class Family
CVE-2009-4031 oval:org.opensuse.security:def:20094031 unix
DSA-1962 kvm -- several vulnerabilities oval:org.mitre.oval:def:6977 unix
DSA-1962-1 kvm - several vulnerabilities oval:org.mitre.oval:def:18428 unix
ELSA-2009:1659: kvm security and bug fix update (Moderate) oval:org.mitre.oval:def:22916 unix
RHSA-2009:1659: kvm security and bug fix update (Moderate) oval:com.redhat.rhsa:def:20091659 unix
The do_insn_fetch function in arch/x86/kvm/emulate.c in the x86 emulator in the KVM subsystem in the Linux kernel before... oval:org.mitre.oval:def:11089 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2009-4031

# Product Type Vendor Product Version Update Edition Language
1 OS Linux Linux Kernel * * * * Version Details Vulnerabilities
2 OS Linux Linux Kernel 2.6.32 RC6 * * Version Details Vulnerabilities
3 OS Linux Linux Kernel 2.6.32 RC2 * * Version Details Vulnerabilities
4 OS Linux Linux Kernel 2.6.32 - * * Version Details Vulnerabilities
5 OS Linux Linux Kernel 2.6.32 RC3 * * Version Details Vulnerabilities
6 OS Linux Linux Kernel 2.6.32 RC7 * * Version Details Vulnerabilities
7 OS Linux Linux Kernel 2.6.32 RC4 * * Version Details Vulnerabilities
8 OS Linux Linux Kernel 2.6.32 RC5 * * Version Details Vulnerabilities
9 OS Linux Linux Kernel 2.6.32 RC1 * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Linux Linux Kernel 9

- References For CVE-2009-4031

https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00777.html
FEDORA FEDORA-2009-13098
https://bugzilla.redhat.com/show_bug.cgi?id=541160 CONFIRM
http://secunia.com/advisories/37720
SECUNIA 37720
http://lists.opensuse.org/opensuse-security-announce/2010-03/msg00006.html
SUSE SUSE-SA:2010:018
http://www.securityfocus.com/bid/37130
BID 37130 Linux Kernel KVM Large SMP Instruction Local Denial of Service Vulnerability Release Date:2010-03-22
http://www.kernel.org/pub/linux/kernel/v2.6/next/patch-v2.6.32-rc8-next-20091125.gz CONFIRM
http://git.kernel.org/?p=linux/kernel/git/avi/kvm.git;a=commit;h=e42d9b8141d1f54ff72ad3850bb110c95a5f3b88 CONFIRM
http://www.openwall.com/lists/oss-security/2009/11/25/1
MLIST [oss-security] 20091125 Re: CVE request: kernel: KVM: x86 emulator: limit instructions to 15 bytes
http://www.openwall.com/lists/oss-security/2009/11/25/3
MLIST [oss-security] 20091125 CVE request: kernel: KVM: x86 emulator: limit instructions to 15 bytes
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11089
OVAL oval:org.mitre.oval:def:11089

- Metasploit Modules Related To CVE-2009-4031

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site. OVAL is a registered trademark of The MITRE Corporation and the authoritative source of OVAL content is MITRE's OVAL web site.
Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.