Home/CVE/The grant-table feature in Xen through 4.8.x does not ensure sufficient type counts for a GNTMAP_device_map and GNTMAP_h
CVE

CVE-2017-10921

The grant-table feature in Xen through 4.8.x does not ensure sufficient type counts for a GNTMAP_device_map and GNTMAP_h

The grant-table feature in Xen through 4.8.x does not ensure sufficient type counts for a GNTMAP_device_map and GNTMAP_host_map mapping, which allows guest OS users to cause a denial of service (count mismanagement and memory corruption) or obtain privileged host OS access, aka XSA-224 bug 2.

CRITICAL · CVSS 10 EPSS 0.01132
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
▤

Affected Products & Versions

1
xen<= 4.8.1
▣

Scoring & Timeline

10
CRITICAL · CVSS v3.0 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD05 Jul 2017 · 01:29 AM
CVSS VectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
⚑

Vendor Advisories

2
suse-csafSUSE-SU-2017:1812-1
suse-csafSUSE-SU-2017:1795-1
🔗

References & Sources

5
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.debian.org/security/2017/dsa-3969
http://www.securitytracker.com/id/1038734
https://security.gentoo.org/glsa/201708-03
https://security.gentoo.org/glsa/201710-17
https://xenbits.xen.org/xsa/advisory-224.htmlPatchVendor Advisory
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