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Last updated: 9/23/2014 6:35:29 PM

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National Cyber Awareness System

Vulnerability Summary for CVE-2010-4247

Original release date: 01/10/2011
Last revised: 03/19/2012
Source: US-CERT/NIST

Overview

The do_block_io_op function in (1) drivers/xen/blkback/blkback.c and (2) drivers/xen/blktap/blktap.c in Xen before 3.4.0 for the Linux kernel 2.6.18, and possibly other versions, allows guest OS users to cause a denial of service (infinite loop and CPU consumption) via a large production request index to the blkback or blktap back-end drivers. NOTE: some of these details are obtained from third party information.

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 5.5 (MEDIUM) (AV:A/AC:L/Au:S/C:N/I:N/A:C) (legend)
Impact Subscore: 6.9
Exploitability Subscore: 5.1
CVSS Version 2 Metrics:
Access Vector: Local network exploitable
Access Complexity: Low
Authentication: Required to exploit
Impact Type: Allows disruption of service

References to Advisories, Solutions, and Tools

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External Source: MLIST
Name: [oss-security] 20101123 CVE request: xen: request-processing loop is unbounded in blkback
Type: Patch Information
External Source: BID
Name: 45029
External Source: VUPEN
Name: ADV-2011-0024
External Source: CONFIRM
Name: http://www.vmware.com/security/advisories/VMSA-2011-0012.html
External Source: MLIST
Name: [oss-security] 20101124 Re: CVE request: xen: request-processing loop is unbounded in blkback
Type: Patch Information
External Source: MISC
Name: http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/77f831cbb91d
Type: Patch Information
External Source: BUGTRAQ
Name: 20111013 VMSA-2011-0012 VMware ESXi and ESX updates to third party libraries and ESX Service Console
External Source: MISC
Name: http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/7070d34f251c
Type: Patch Information
External Source: SECUNIA
Name: 42789
External Source: SECUNIA
Name: 35093
Type: Advisory
External Source: CONFIRM
Name: https://bugzilla.redhat.com/show_bug.cgi?id=656206
Type: Patch Information
External Source: REDHAT
Name: RHSA-2011:0004
External Source: SECUNIA
Name: 46397

Technical Details

Vulnerability Type (View All)