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Last updated: 10/31/2014 7:57:00 PM

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National Cyber Awareness System

Vulnerability Summary for CVE-2009-3290

Original release date: 09/22/2009
Last revised: 03/19/2012
Source: US-CERT/NIST

Overview

The kvm_emulate_hypercall function in arch/x86/kvm/x86.c in KVM in the Linux kernel 2.6.25-rc1, and other versions before 2.6.31, when running on x86 systems, does not prevent access to MMU hypercalls from ring 0, which allows local guest OS users to cause a denial of service (guest kernel crash) and read or write guest kernel memory via unspecified "random addresses."

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 7.2 (HIGH) (AV:L/AC:L/Au:N/C:C/I:C/A:C) (legend)
Impact Subscore: 10.0
Exploitability Subscore: 3.9
CVSS Version 2 Metrics:
Access Vector: Locally exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service

Vendor Statements (disclaimer)

Official Statement from Red Hat (09/22/2009)
Red Hat is aware of this issue and is tracking it via the following bug: https://bugzilla.redhat.com/CVE-2009-3290 This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 3, 4, and Red Hat Enterprise MRG as KVM (Kernel-based Virtual Machine) is only supported in Red Hat Enterprise Linux 5. A future kernel update in Red Hat Enterprise Linux 5 will address this flaw.

References to Advisories, Solutions, and Tools

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External Source: OVAL
Name: oval:org.mitre.oval:def:11328
External Source: CONFIRM
Name: http://patchwork.kernel.org/patch/38926/
Type: Patch Information
External Source: MLIST
Name: [oss-security] 20090921 Re: CVE request: kernel: KVM: x86: Disallow hypercalls for guest callers in rings > 0
External Source: MLIST
Name: [oss-security] 20090922 Re: CVE request: kernel: KVM: x86: Disallow hypercalls for guest callers in rings > 0
External Source: CONFIRM
Name: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=07708c4af1346ab1521b26a202f438366b7bcffd
External Source: UBUNTU
Name: USN-852-1
External Source: SECUNIA
Name: 37105
Type: Advisory
External Source: MLIST
Name: [oss-security] 20090918 CVE request: kernel: KVM: x86: Disallow hypercalls for guest callers in rings > 0
External Source: REDHAT
Name: RHSA-2009:1465
Type: Advisory
External Source: CONFIRM
Name: https://bugzilla.redhat.com/show_bug.cgi?id=524124

References to Check Content

Identifier: oval:org.mitre.oval:def:11328
Check System: http://oval.mitre.org/XMLSchema/oval-definitions-5

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Technical Details

Vulnerability Type (View All)
  • Resource Management Errors (CWE-399)