Vulnerability Details : CVE-2016-1570
The PV superpage functionality in arch/x86/mm.c in Xen 3.4.0, 3.4.1, and 4.1.x through 4.6.x allows local PV guests to obtain sensitive information, cause a denial of service, gain privileges, or have unspecified other impact via a crafted page identifier (MFN) to the (1) MMUEXT_MARK_SUPER or (2) MMUEXT_UNMARK_SUPER sub-op in the HYPERVISOR_mmuext_op hypercall or (3) unknown vectors related to page table updates.
Vulnerability category: Input validationDenial of service
Exploit prediction scoring system (EPSS) score for CVE-2016-1570
Probability of exploitation activity in the next 30 days: 0.16%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 52 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2016-1570
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
---|---|---|---|---|---|
6.9
|
MEDIUM | AV:L/AC:M/Au:N/C:C/I:C/A:C |
3.4
|
10.0
|
NIST |
8.5
|
HIGH | CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H |
1.8
|
6.0
|
NIST |
CWE ids for CVE-2016-1570
-
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.Assigned by: nvd@nist.gov (Primary)
References for CVE-2016-1570
-
http://www.securitytracker.com/id/1034744
Xen PV Superpage Hypercalls Lets Local Users on a Guest System Gain Elevated Privileges on the Host System - SecurityTracker
-
http://xenbits.xen.org/xsa/advisory-167.html
XSA-167 - Xen Security AdvisoriesVendor Advisory
-
http://www.debian.org/security/2016/dsa-3519
Debian -- Security Information -- DSA-3519-1 xen
Products affected by CVE-2016-1570
- cpe:2.3:o:xen:xen:3.4.1:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:3.4.0:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.1.0:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.1.1:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.2.0:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.1.2:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.1.3:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.1.4:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.2.1:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.2.2:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.1.5:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.2.3:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.3.0:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.3.1:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.1.6.1:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.4.0:rc1:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.3.2:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.4.0:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.4.1:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.2.4:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.2.5:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.3.3:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.5.0:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.3.4:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.4.2:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.5.1:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.4.3:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.6.0:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.5.2:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.1.6:*:*:*:*:*:*:*