CVE-2017-10921
critical
CVSS v3
10.0
CVSS v2
10.0
VIR risk
10.0
Description
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.
Predictions
Exploit likelihood
98%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2017-10921
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2017-10921.html
Vendor advisory: cve@mitre.org — https://xenbits.xen.org/xsa/advisory-224.html
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 4.8.1-1+deb9u3 |
| debian | bullseye | fixed | 4.8.1-1+deb9u3 |
| debian | forky | fixed | 4.8.1-1+deb9u3 |
| debian | sid | fixed | 4.8.1-1+deb9u3 |
| debian | trixie | fixed | 4.8.1-1+deb9u3 |
References
- 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.html
- https://www.suse.com/security/cve/CVE-2017-10921.html
- https://security-tracker.debian.org/tracker/CVE-2017-10921
CWEs
CWE-119
Verify integrity in audit chain (admin only). AS-IS.