Denial of Service Vulnerability in Xen Hypervisor Software
CVE-2016-1571

6.3MEDIUM

Key Information:

Vendor

Citrix
Status
Xenserver
Vendor
CVE Published:
22 January 2016

What is CVE-2016-1571?

The vulnerability in the Xen Hypervisor arises from the paging_invlpg function when shadow mode paging or nested virtualization is enabled. Local HVM guest users can exploit this flaw by sending a non-canonical guest address through the INVVPID instruction, which subsequently leads to a hypervisor crash. This issue highlights the need for robust security measures and constant updates to hypervisor configurations to prevent unauthorized access and service disruptions.

References

http://www.debian.org/security/2016/dsa-3519
vendor-advisoryx_refsource_DEBIAN
http://www.securitytracker.com/id/1034745
vdb-entryx_refsource_SECTRACK
http://support.citrix.com/article/CTX205496
x_refsource_CONFIRM

CVSS V3.1

Score:
6.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.
CVE-2016-1571 : Denial of Service Vulnerability in Xen Hypervisor Software