CVE-2015-8550
high
CVSS v3
8.2
CVSS v2
5.7
VIR risk
8.2
Description
Xen, when used on a system providing PV backends, allows local guest OS administrators to cause a denial of service (host OS crash) or gain privileges by writing to memory shared between the frontend and backend, aka a double fetch vulnerability.
Predictions
Exploit likelihood
78%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2015-8550
Vendor advisory: cve@mitre.org — http://xenbits.xen.org/xsa/advisory-155.html
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | bookworm | fixed | 4.3.3-3 |
| debian | bullseye | fixed | 4.3.3-3 |
| debian | forky | fixed | 4.3.3-3 |
| debian | sid | fixed | 4.3.3-3 |
| debian | trixie | fixed | 4.3.3-3 |
References
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00094.html
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00045.html
- http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00005.html
- http://www.debian.org/security/2016/dsa-3434
- http://www.debian.org/security/2016/dsa-3471
- http://www.debian.org/security/2016/dsa-3519
- http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
- http://www.securityfocus.com/bid/79592
- http://www.securitytracker.com/id/1034479
- http://xenbits.xen.org/xsa/advisory-155.html
- https://security.gentoo.org/glsa/201604-03
- https://security-tracker.debian.org/tracker/CVE-2015-8550
CWEs
CWE-284
Verify integrity in audit chain (admin only). AS-IS.