High severity · published Jan 22, 2016
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,…
8.5
CVSS
1.2%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)1.2% · higher than 67% 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; 3.4.1; 4.1.0; 4.1.1; 4.1.2; 4.1.3; +24 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-1570
CVE.org
https://www.cve.org/CVERecord?id=CVE-2016-1570
www.debian.org
http://www.debian.org/security/2016/dsa-3519
www.securitytracker.com
http://www.securitytracker.com/id/1034744
Vendor Advisory
http://xenbits.xen.org/xsa/advisory-167.html
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