High severity · published Aug 2, 2016
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…
8.8
CVSS
0.4%
EPSS
No
On KEV
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:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 34% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
XE
Xen · Xen
3.4.0; 3.4.2; 3.4.3; 3.4.4; 4.0.0; 4.0.1; +21 more · source: NVD
XE
Xenserver · Citrix
6.0; 6.0.2; 6.1; 6.2.0; 6.5.0; 7.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-6258
CVE.org
https://www.cve.org/CVERecord?id=CVE-2016-6258
Vendor Advisory
http://support.citrix.com/article/CTX214954
www.debian.org
http://www.debian.org/security/2016/dsa-3633
Release Notes
http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
Third Party Advisory
http://www.securityfocus.com/bid/92131
Third Party Advisory
http://www.securitytracker.com/id/1036446
Mitigation
http://xenbits.xen.org/xsa/advisory-182.html
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