Privilege Escalation in Xen x86 Emulator
CVE-2016-9386

7.8HIGH

Key Information:

Vendor
Citrix
Status
Xenserver
Vendor
CVE Published:
23 January 2017

Summary

The x86 emulator within the Xen Hypervisor has a flaw in how it manages NULL segments during memory access. This vulnerability allows local HVM guest users to exploit scenarios where base and limit values are unexpected, potentially granting them elevated privileges. This concern necessitates prompt action from system administrators to ensure the integrity and security of their environments. Urgent attention is advised to mitigate any potential exploitation.

References

http://www.securityfocus.com/bid/94471
vdb-entryx_refsource_BID
https://security.gentoo.org/glsa/201612-56
vendor-advisoryx_refsource_GENTOO
https://support.citrix.com/article/CTX218775
x_refsource_CONFIRM

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.