High severity · published Sep 12, 2017
CVE-2017-14319
A grant unmapping issue was discovered in Xen through 4.9.x
8.8
CVSS
0.4%
EPSS
No
On KEV
Description
A grant unmapping issue was discovered in Xen through 4.9.x. When removing or replacing a grant mapping, the x86 PV specific path needs to make sure page table entries remain in sync with other accounting done. Although the identity of the page frame was validated correctly, neither the presence of the mapping nor page writability were taken into account.
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 35% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
XE
Xen · Xen
through 4.9.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-14319
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-14319
Third Party Advisory
http://www.securityfocus.com/bid/100819
Third Party Advisory
http://www.securitytracker.com/id/1039351
Patch
http://xenbits.xen.org/xsa/advisory-234.html
lists.debian.org
https://lists.debian.org/debian-lts-announce/2018/10/msg00009.html
support.citrix.com
https://support.citrix.com/article/CTX227185
www.debian.org
https://www.debian.org/security/2017/dsa-4050
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