National Vulnerability Database

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    Vulnerabilities Detail

CVE-2010-4255 Detail

Description

The fixup_page_fault function in arch/x86/traps.c in Xen 4.0.1 and earlier on 64-bit platforms, when paravirtualization is enabled, does not verify that kernel mode is used to call the handle_gdt_ldt_mapping_fault function, which allows guest OS users to cause a denial of service (host OS BUG_ON) via a crafted memory access.

Source:  MITRE
Description Last Modified:  01/24/2011

Impact

CVSS v2.0 Severity and Metrics:

Base Score: 6.1 MEDIUM
Vector: (AV:A/AC:L/Au:N/C:N/I:N/A:C) (V2 legend)
Impact Subscore: 6.9
Exploitability Subscore: 6.5

Access Vector (AV): Local_Network
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Complete
Additional Information:
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://lists.xensource.com/archives/html/xen-devel/2010-11/msg01650.html Patch
http://openwall.com/lists/oss-security/2010/11/30/5 Patch
http://openwall.com/lists/oss-security/2010/11/30/8 Patch
http://www.redhat.com/support/errata/RHSA-2011-0017.html
http://www.securityfocus.com/archive/1/520102/100/0/threaded
http://www.vmware.com/security/advisories/VMSA-2011-0012.html
https://bugzilla.redhat.com/show_bug.cgi?id=658155 Patch

Technical Details

Vulnerability Type (View All)

Change History

2 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2010-4255
NVD Published Date:
01/24/2011
NVD Last Modified:
10/10/2018