CVE-2016-3158: Infoleak
First published: Wed Apr 13 2016(Updated: )
The xrstor function in arch/x86/xstate.c in Xen 4.x does not properly handle writes to the hardware FSW.ES bit when running on AMD64 processors, which allows local guest OS users to obtain sensitive register content information from another guest by leveraging pending exception and mask bits. NOTE: this vulnerability exists because of an incorrect fix for CVE-2013-2076.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Xen Xen | <=4.4.0 | |
| Fedoraproject Fedora | =22 | |
| Fedoraproject Fedora | =23 | |
| Oracle VM Server | =3.3 | |
| Oracle VM Server | =3.4 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- http://lists.fedoraproject.org/pipermail/package-announce/2016-April/181699.html
- http://lists.fedoraproject.org/pipermail/package-announce/2016-April/181729.html
- http://support.citrix.com/article/CTX209443
- http://www.debian.org/security/2016/dsa-3554
- http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
- http://www.securityfocus.com/bid/85714
- http://www.securitytracker.com/id/1035435
- http://xenbits.xen.org/xsa/advisory-172.html
- http://xenbits.xen.org/xsa/xsa172-4.3.patch
- http://xenbits.xen.org/xsa/xsa172.patch
- collector/nvd-index
- agent/references
- agent/weakness
- agent/type
- agent/description
- agent/event
- agent/severity
- agent/author
- agent/remedy
- agent/last-modified-date
- agent/softwarecombine
- agent/first-publish-date
- agent/tags
- collector/mitre-cve
- source/MITRE
- vendor/xen
- canonical/xen xen
- version/xen xen/4.4.0
- vendor/fedoraproject
- canonical/fedoraproject fedora
- version/fedoraproject fedora/22
- version/fedoraproject fedora/23
- vendor/oracle
- canonical/oracle vm server
- version/oracle vm server/3.3
- version/oracle vm server/3.4