Xen xc_dom_bzimageloader.c denial of service

xen-xcdombzimageloader-dos (69381) The risk level is classified as MediumMedium Risk

Description:

Xen is vulnerable to a denial of service, caused by an error in the xc_dom_bzimageloader.c. By using unknown attack vectors, a local attacker could exploit this vulnerability to cause the application to enter into an infinite loop.

*CVSS:

Base Score: 2.1
  Access Vector: Local
  Access Complexity: Low
  Authentication: None
  Confidentiality Impact: None
  Integrity Impact: None
  Availability Impact: Partial
 
Temporal Score: 1.6
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Denial of Service

Remedy:

Apply the patch for this vulnerability, available from the XenSource Web site. See References.

References:

  • Red Hat Bugzilla Bug 696927: CVE-2011-1583) CVE-2011-1583 xen: insufficiencies in pv kernel image validation.
  • XenSource Web site: Xen.
  • XenSource Web site: Xen.
  • CVE-2011-3262: tools/libxc/xc_dom_bzimageloader.c in Xen 3.2, 3.3, 4.0, and 4.1 allows local users to cause a denial of service (management software infinite loop and management domain resource consumption) via unspecified vectors related to Lack of error checking in the decompression loop.
  • DSA-2337: xen -- several vulnerabilities
  • OSVDB ID: 73740: Xen Paravirtualised Guests Decompression Local DoS
  • RHSA-2011-0496: Important: xen security update

Platforms Affected:

  • Citrix Xen 3.2.0
  • Citrix Xen 3.3.0
  • Citrix Xen 4.0.0
  • Citrix Xen 4.1.0
  • RedHat Enterprise Linux 5 Client
  • RedHat Enterprise Linux 5
  • RedHat Enterprise Linux EUS 5.6.z
  • RedHat Enterprise Linux Long Life 5.6
  • RedHat RHEL Desktop Multi OS 5 Client
  • RedHat RHEL Virtualization 5 Server

Reported:

May 09, 2011

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The information within this database may change without notice. 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. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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