Medium severity · published Jan 22, 2016
CVE-2016-1571
The paging_invlpg function in include/asm-x86/paging.h in Xen 3.3.x through 4.6.x, when using shadow mode paging or nested virtualization is enabled, allows local HVM guest users…
6.3
CVSS
1.3%
EPSS
No
On KEV
Description
The paging_invlpg function in include/asm-x86/paging.h in Xen 3.3.x through 4.6.x, when using shadow mode paging or nested virtualization is enabled, allows local HVM guest users to cause a denial of service (host crash) via a non-canonical guest address in an INVVPID instruction, which triggers a hypervisor bug check.
CVSS vector
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)1.3% · higher than 70% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
XE
Xen · Xen
3.3.0; 3.3.1; 3.3.2; 3.4.0; 3.4.1; 3.4.2; +30 more · source: NVD
XE
Xenserver · Citrix
through 6.5 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-1571
CVE.org
https://www.cve.org/CVERecord?id=CVE-2016-1571
Third Party Advisory
http://support.citrix.com/article/CTX205496
www.debian.org
http://www.debian.org/security/2016/dsa-3519
Third Party Advisory
http://www.securitytracker.com/id/1034745
Vendor Advisory
http://xenbits.xen.org/xsa/advisory-168.html
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