Xen through 4.8.x on 64-bit platforms mishandles page tables after an IRET hypercall, which might allow PV guest OS users to execute arbitrary code on the host OS, aka XSA-213.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Xen | Xen | 4.8.0 (including) | 4.8.0 (including) |
| Xen | Xen | 4.8.1 (including) | 4.8.1 (including) |
| Xen | Ubuntu | devel | * |
| Xen | Ubuntu | esm-infra/xenial | * |
| Xen | Ubuntu | trusty | * |
| Xen | Ubuntu | xenial | * |
| Xen | Ubuntu | yakkety | * |
| Xen | Ubuntu | zesty | * |
References
- http://www.securityfocus.com/bid/98426
- http://www.securitytracker.com/id/1038386
- https://blog.xenproject.org/2017/05/02/updates-on-xsa-213-xsa-214-and-xsa-215/
- https://security.gentoo.org/glsa/201705-11
- https://xenbits.xen.org/xsa/advisory-213.html
- http://www.securityfocus.com/bid/98426
- http://www.securitytracker.com/id/1038386
- https://blog.xenproject.org/2017/05/02/updates-on-xsa-213-xsa-214-and-xsa-215/
- https://security.gentoo.org/glsa/201705-11
- https://xenbits.xen.org/xsa/advisory-213.html