VulnerabilityModified
CVE-2016-7093
Xen 4.5.3, 4.6.3, and 4.7.x allow local HVM guest OS administrators to overwrite hypervisor memory and consequently gain host OS privileges by leveraging mishandling of instruction pointer truncation during emulation.
HIGH 8.2EPSS 0.43%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.43%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Xen 4.5.3, 4.6.3, and 4.7.x allow local HVM guest OS administrators to overwrite hypervisor memory and consequently gain host OS privileges by leveraging mishandling of instruction pointer truncation during emulation.
- CVSS 3.0
- 8.2 HIGHCVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
- EPSS
- 0.43% probability · 36th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-264
- Affected
- xen/xen
- Source
- cve@mitre.org
References
- http://support.citrix.com/article/CTX216071Third Party Advisory
- http://www.securityfocus.com/bid/92865
- http://www.securitytracker.com/id/1036752Third Party Advisory, VDB Entry
- http://xenbits.xen.org/xsa/advisory-186.htmlPatch, Vendor Advisory
- http://xenbits.xen.org/xsa/xsa186-0001-x86-emulate-Correct-boundary-interactions-of-emulate.patchPatch, Vendor Advisory
- https://security.gentoo.org/glsa/201611-09
- http://support.citrix.com/article/CTX216071Third Party Advisory
- http://www.securityfocus.com/bid/92865
- http://www.securitytracker.com/id/1036752Third Party Advisory, VDB Entry
- http://xenbits.xen.org/xsa/advisory-186.htmlPatch, Vendor Advisory
- http://xenbits.xen.org/xsa/xsa186-0001-x86-emulate-Correct-boundary-interactions-of-emulate.patchPatch, Vendor Advisory
- https://security.gentoo.org/glsa/201611-09
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.