CVE-2016-6258 — Improper Access Control in Citrix Xenserver

CWE-284 — Improper Access Control8 documents7 sources
Severity
8.8HIGHNVD
EPSS
0.1%
top 70.29%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
XENCitrix Xenserver
Timeline
PublishedAug 2
Latest updateMay 17

Description

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.

CVSS vector

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:HExploitability: 2.0 | Impact: 6.0

Affected Packages3 packages

▶Debianxen/xen< 4.8.0~rc3-1+3
▶NVDxen/xen27 versions+26
▶NVDcitrix/xenserver6 versions+5

Patches

Patch: xenbits.xen.org ↗Patch: xenbits.xen.org ↗Patch: xenbits.xen.org ↗

🔴Vulnerability Details

3
GHSA
GHSA-gh95-4f96-964p: The PV pagetable code in arch/x86/mm↗2022-05-17
▶
OSV
CVE-2016-6258: The PV pagetable code in arch/x86/mm↗2016-08-02
▶
CVEList
CVE-2016-6258: The PV pagetable code in arch/x86/mm↗2016-08-02
▶

📋Vendor Advisories

2
Red Hat
xen: x86: Privilege escalation in PV guests (XSA-182)↗2016-07-26
▶
Debian
CVE-2016-6258: xen - The PV pagetable code in arch/x86/mm.c in Xen 4.7.x and earlier allows local 32-...↗2016
▶

💬Community

2
Bugzilla
CVE-2016-6258 xsa182 xen: x86: Privilege escalation in PV guests (XSA-182) [fedora-all]↗2016-07-26
▶
Bugzilla
CVE-2016-6258 xsa182 xen: x86: Privilege escalation in PV guests (XSA-182)↗2016-07-13
▶
CVE-2016-6258 — Improper Access Control in Citrix | cvebase