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Overview

Vulnerability Score 5.8 5.8
CVE Id CVE-2014-1895
Last Modified 19 Apr 2014 12:48:03
Published 01 Apr 2014 02:35:53
Confidentiality Impact PARTIAL PARTIAL
Integrity Impact NONE NONE
Availability Impact COMPLETE COMPLETE
Access Vector ADJACENT_NETWORK
Access Complexity MEDIUM
Authentication SINGLE_INSTANCE

CVE-2014-1895

Summary

Off-by-one error in the flask_security_avc_cachestats function in xsm/flask/flask_op.c in Xen 4.2.x and 4.3.x, when the maximum number of physical CPUs are in use, allows local users to cause a denial of service (host crash) or obtain sensitive information from hypervisor memory by leveraging a FLASK_AVC_CACHESTAT hypercall, which triggers a buffer over-read.

Vulnerable Systems

Operating System

  • Xen 4.2.0

  • Xen 4.2.1

  • Xen 4.2.2

  • Xen 4.2.3

  • Xen 4.3.0

  • Xen 4.3.1


References

CONFIRM - http://xenbits.xen.org/xsa/advisory-85.html

MLIST - [oss-security] 20140210 Xen Security Advisory 85 (CVE-2014-1895) - Off-by-one error in FLASK_AVC_CACHESTAT hypercall

MLIST - [oss-security] 20140207 Re: Xen Security Advisory 84 - integer overflow in several XSM/Flask hypercalls

SUSE - SUSE-SU-2014:0373


Last Updated: 27 May 2016 11:04:50