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Vulnerability Details : CVE-2011-4347

The kvm_vm_ioctl_assign_device function in virt/kvm/assigned-dev.c in the KVM subsystem in the Linux kernel before 3.1.10 does not verify permission to access PCI configuration space and BAR resources, which allows host OS users to assign PCI devices and cause a denial of service (host OS crash) via a KVM_ASSIGN_PCI_DEVICE operation.
Publish Date : 2013-06-08 Last Update Date : 2013-06-10
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- CVSS Scores & Vulnerability Types

CVSS Score
4.0
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 High (Specialized access conditions exist. It is hard to exploit and several special conditions must be satisfied to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of Service
CWE ID 264

- Additional Vendor Supplied Data

Vendor Impact CVSS Score CVSS Vector Report Date Publish Date
Redhat moderate
4.0
AV:L/AC:H/Au:N/C:N/I:N/A:C 2011-11-20 2011-11-20
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- Related OVAL Definitions

Title Definition Id Class Family
DEPRECATED: ELSA-2012-0350 -- kernel security and bug fix update (moderate) oval:org.mitre.oval:def:27856 unix
DSA-2443-1 linux-2.6 -- privilege escalation/denial of service oval:org.mitre.oval:def:15254 unix
ELSA-2012-0149 -- kvm security and bug fix update (moderate) oval:org.mitre.oval:def:27813 unix
ELSA-2012-2003 -- Unbreakable Enterprise kernel security and bug fix update (important) oval:org.mitre.oval:def:27914 unix
ELSA-2012:0350: kernel security and bug fix update (Moderate) oval:org.mitre.oval:def:23710 unix
RHSA-2012:0149: kvm security and bug fix update (Moderate) oval:com.redhat.rhsa:def:20120149 unix
RHSA-2012:0350: kernel security and bug fix update (Moderate) oval:org.mitre.oval:def:21098 unix
RHSA-2012:0350: kernel security and bug fix update (Moderate) oval:com.redhat.rhsa:def:20120350 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-2011-4347

# Product Type Vendor Product Version Update Edition Language
1 OS Linux Linux Kernel 3.1.1 Version Details Vulnerabilities
2 OS Linux Linux Kernel 3.1.2 Version Details Vulnerabilities
3 OS Linux Linux Kernel 3.1.3 Version Details Vulnerabilities
4 OS Linux Linux Kernel 3.1.4 Version Details Vulnerabilities
5 OS Linux Linux Kernel 3.1.5 Version Details Vulnerabilities
6 OS Linux Linux Kernel 3.1.6 Version Details Vulnerabilities
7 OS Linux Linux Kernel 3.1.7 Version Details Vulnerabilities
8 OS Linux Linux Kernel 3.1.8 Version Details Vulnerabilities
9 OS Linux Linux Kernel 3.1.9 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Linux Linux Kernel 9

- References For CVE-2011-4347

http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1.10 CONFIRM
https://github.com/torvalds/linux/commit/c4e7f9022e506c6635a5037713c37118e23193e4 CONFIRM
http://www.openwall.com/lists/oss-security/2011/11/24/7
MLIST [oss-security] 20111124 Re: CVE request -- kernel: kvm: device assignment DoS
https://bugzilla.redhat.com/show_bug.cgi?id=756084 CONFIRM

- Metasploit Modules Related To CVE-2011-4347

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


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