Vulnerability in Citrix Xenserver
CVE-2016-6258
The PV pagetable code in arch/x86/mm.c in Xen 4.7.x and earlier allows local 32-bit PV guest OS administrators to gain host OS privileges by leveraging fast-paths for updating pagetable entries.
EPSS: 0.001 (29.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
Affected products
- Citrix Xenserver — versions 6.0, 6.0.2, 6.1
- Xen — versions 3.4.0, 3.4.2, 3.4.3
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (x_refsource_CONFIRM, Release Notes)
- cve@mitre.org (x_refsource_CONFIRM, Patch, Mitigation, Vendor Advisory)
- cve@mitre.org (x_refsource_CONFIRM, Patch)
- cve@mitre.org (x_refsource_CONFIRM, Vendor Advisory)
- GLSA-201611-09 (vendor-advisory, x_refsource_GENTOO)
- cve@mitre.org (x_refsource_CONFIRM, Patch)
- cve@mitre.org (x_refsource_CONFIRM, Patch)
- DSA-3633 (vendor-advisory, x_refsource_DEBIAN)
- 1036446 (Third Party Advisory, vdb-entry, x_refsource_SECTRACK)
- 92131 (Third Party Advisory, vdb-entry, x_refsource_BID)
Frequently asked questions
- What is CVE-2016-6258?
- CVE-2016-6258 is a high-severity vulnerability in Citrix Xenserver, classified under Improper Access Control. CVSS score: 8.8/10. Published 2016-08-02.
- How severe is CVE-2016-6258?
- High severity. CVSS v3 base score is 8.8 out of 10.