CVE-2016-7094: Buffer Overflow
First published: Wed Sep 21 2016(Updated: )
Buffer overflow in Xen 4.7.x and earlier allows local x86 HVM guest OS administrators on guests running with shadow paging to cause a denial of service via a pagetable update.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Xen xen-unstable | <=4.7.0 |
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Reference Links
- http://support.citrix.com/article/CTX216071
- http://www.debian.org/security/2016/dsa-3663
- http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
- http://www.securityfocus.com/bid/92864
- http://www.securitytracker.com/id/1036753
- http://xenbits.xen.org/xsa/advisory-187.html
- http://xenbits.xen.org/xsa/xsa187-0001-x86-shadow-Avoid-overflowing-sh_ctxt-seg_reg.patch
- https://security.gentoo.org/glsa/201611-09
Frequently Asked Questions
What is the severity of CVE-2016-7094?
CVE-2016-7094 has a medium severity rating due to its potential to cause denial of service on affected systems.
How do I fix CVE-2016-7094?
To fix CVE-2016-7094, upgrade to Xen version 4.8.0 or later where the vulnerability has been addressed.
Who is affected by CVE-2016-7094?
CVE-2016-7094 affects local x86 HVM guest OS administrators on Xen systems running version 4.7.x and earlier with shadow paging.
What are the potential impacts of CVE-2016-7094?
The potential impacts of CVE-2016-7094 include system crashes and denial of service for guest operating systems.
Is CVE-2016-7094 easy to exploit?
CVE-2016-7094 can be exploited by local administrators, making it a low-barrier vulnerability for those with the necessary access.
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