CVE-2018-18883
An issue was discovered in Xen 4.9.x through 4.11.x, on Intel x86 platforms, allowing x86 HVM and PVH guests to cause a host OS denial of service (NULL pointer dereference) or possibly have unspecified other impact because nested VT-x is not properly…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.44%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
An issue was discovered in Xen 4.9.x through 4.11.x, on Intel x86 platforms, allowing x86 HVM and PVH guests to cause a host OS denial of service (NULL pointer dereference) or possibly have unspecified other impact because nested VT-x is not properly restricted.
- CVSS 3.0
- 8.8 HIGHCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- EPSS
- 0.44% probability · 37th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- xen/xen
- Source
- cve@mitre.org
References
- http://www.securityfocus.com/bid/105817Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1042021Third Party Advisory, VDB Entry
- https://xenbits.xen.org/xsa/advisory-278.htmlMitigation, Patch, Vendor Advisory
- http://www.securityfocus.com/bid/105817Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1042021Third Party Advisory, VDB Entry
- https://xenbits.xen.org/xsa/advisory-278.htmlMitigation, Patch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.