CVE-2012-2934
First published: Mon Dec 03 2012(Updated: )
Xen 4.0, and 4.1, when running a 64-bit PV guest on "older" AMD CPUs, does not properly protect against a certain AMD processor bug, which allows local guest OS users to cause a denial of service (host hang) via sequential execution of instructions across a non-canonical boundary, a different vulnerability than CVE-2012-0217.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Xen xen-unstable | =4.0.0 | |
| Xen xen-unstable | =4.1.0 |
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.opensuse.org/opensuse-security-announce/2012-11/msg00017.html
- http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00018.html
- http://lists.xen.org/archives/html/xen-announce/2012-06/msg00002.html
- http://secunia.com/advisories/51413
- http://secunia.com/advisories/55082
- http://security.gentoo.org/glsa/glsa-201309-24.xml
- http://support.amd.com/us/Processor_TechDocs/25759.pdf
- http://www.debian.org/security/2012/dsa-2501
- http://www.securityfocus.com/bid/53961
Frequently Asked Questions
What is the severity of CVE-2012-2934?
CVE-2012-2934 is considered a high severity vulnerability due to its potential to cause a denial of service on the host.
How do I fix CVE-2012-2934?
To mitigate CVE-2012-2934, upgrade to a later version of Xen that addresses this vulnerability, specifically avoiding older 64-bit PV guest configurations.
Who is affected by CVE-2012-2934?
CVE-2012-2934 affects users running Xen versions 4.0.0 and 4.1.0 on older AMD CPUs with 64-bit PV guests.
What kind of attack does CVE-2012-2934 enable?
CVE-2012-2934 allows local guest OS users to execute instructions that can lead to a denial of service by causing the host machine to hang.
Is CVE-2012-2934 a remote or local vulnerability?
CVE-2012-2934 is a local vulnerability, meaning it requires an attacker to have access to the guest operating system to exploit it.
- agent/type
- agent/first-publish-date
- agent/last-modified-date
- agent/softwarecombine
- agent/severity
- agent/remedy
- agent/references
- agent/author
- agent/tags
- agent/description
- agent/event
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/xen
- canonical/xen xen-unstable
- version/xen xen-unstable/4.0.0
- version/xen xen-unstable/4.1.0