CVE-2014-7156
low
CVSS v3
—
CVSS v2
3.3
VIR risk
3.3
Description
The x86_emulate function in arch/x86/x86_emulate/x86_emulate.c in Xen 3.3.x through 4.4.x does not check the supervisor mode permissions for instructions that generate software interrupts, which allows local HVM guest users to cause a denial of service (guest crash) via unspecified vectors.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2014-7156
Vendor advisory: cve@mitre.org — http://xenbits.xen.org/xsa/advisory-106.html
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | bookworm | fixed | 4.4.1-3 |
| debian | bullseye | fixed | 4.4.1-3 |
| debian | forky | fixed | 4.4.1-3 |
| debian | sid | fixed | 4.4.1-3 |
| debian | trixie | fixed | 4.4.1-3 |
References
- http://lists.fedoraproject.org/pipermail/package-announce/2014-October/140418.html
- http://lists.fedoraproject.org/pipermail/package-announce/2014-October/140483.html
- http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00002.html
- http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00003.html
- http://secunia.com/advisories/61500
- http://secunia.com/advisories/61858
- http://secunia.com/advisories/61890
- http://security.gentoo.org/glsa/glsa-201412-42.xml
- http://support.citrix.com/article/CTX200218
- http://www.debian.org/security/2014/dsa-3041
- http://www.securityfocus.com/bid/70062
- http://www.securitytracker.com/id/1030889
- http://xenbits.xen.org/xsa/advisory-106.html
- https://security-tracker.debian.org/tracker/CVE-2014-7156
CWEs
CWE-264
Verify integrity in audit chain (admin only). AS-IS.