CVE-2013-1917: Input Validation
First published: Mon May 13 2013(Updated: )
Xen 3.1 through 4.x, when running 64-bit hosts on Intel CPUs, does not clear the NT flag when using an IRET after a SYSENTER instruction, which allows PV guest users to cause a denial of service (hypervisor crash) by triggering a #GP fault, which is not properly handled by another IRET instruction.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Xen xen-unstable | =3.1.3 | |
| Xen xen-unstable | =3.1.4 | |
| Xen xen-unstable | =3.2.0 | |
| Xen xen-unstable | =3.2.1 | |
| Xen xen-unstable | =3.2.2 | |
| Xen xen-unstable | =3.2.3 | |
| Xen xen-unstable | =3.3.0 | |
| Xen xen-unstable | =3.3.1 | |
| Xen xen-unstable | =3.3.2 | |
| Xen xen-unstable | =3.4.0 | |
| Xen xen-unstable | =3.4.1 | |
| Xen xen-unstable | =3.4.2 | |
| Xen xen-unstable | =3.4.3 | |
| Xen xen-unstable | =3.4.4 | |
| Xen xen-unstable | =4.0.0 | |
| Xen xen-unstable | =4.0.1 | |
| Xen xen-unstable | =4.0.2 | |
| Xen xen-unstable | =4.0.3 | |
| Xen xen-unstable | =4.0.4 | |
| Xen xen-unstable | =4.1.0 | |
| Xen xen-unstable | =4.1.1 | |
| Xen xen-unstable | =4.1.2 | |
| Xen xen-unstable | =4.1.3 | |
| Xen xen-unstable | =4.1.4 | |
| Xen xen-unstable | =4.2.0 | |
| Xen xen-unstable | =4.2.1 | |
| Xen xen-unstable | =4.2.2 |
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Reference Links
- http://lists.fedoraproject.org/pipermail/package-announce/2013-May/104537.html
- http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00015.html
- http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html
- http://lists.opensuse.org/opensuse-security-announce/2014-04/msg00000.html
- http://lists.opensuse.org/opensuse-updates/2013-06/msg00049.html
- http://secunia.com/advisories/55082
- http://security.gentoo.org/glsa/glsa-201309-24.xml
- http://www.debian.org/security/2012/dsa-2662
- http://www.openwall.com/lists/oss-security/2013/04/18/8
- http://www.securitytracker.com/id/1028455
Frequently Asked Questions
What is the severity of CVE-2013-1917?
CVE-2013-1917 has a severity rating that indicates it can cause a denial of service through a hypervisor crash.
How do I fix CVE-2013-1917?
To fix CVE-2013-1917, update your Xen software to a version that addresses this vulnerability.
What systems are affected by CVE-2013-1917?
CVE-2013-1917 affects Xen versions 3.1 through 4.x running on 64-bit hosts with Intel CPUs.
What types of attacks can exploit CVE-2013-1917?
CVE-2013-1917 can be exploited by PV guest users to trigger a hypervisor crash.
Is there a workaround for CVE-2013-1917?
Currently, the best solution for CVE-2013-1917 is to apply the latest security patches and updates for your Xen installation.
- agent/references
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/severity
- agent/last-modified-date
- agent/author
- agent/weakness
- agent/first-publish-date
- agent/description
- agent/event
- agent/source
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/xen
- canonical/xen xen-unstable
- version/xen xen-unstable/3.1.3
- version/xen xen-unstable/3.1.4
- version/xen xen-unstable/3.2.0
- version/xen xen-unstable/3.2.1
- version/xen xen-unstable/3.2.2
- version/xen xen-unstable/3.2.3
- version/xen xen-unstable/3.3.0
- version/xen xen-unstable/3.3.1
- version/xen xen-unstable/3.3.2
- version/xen xen-unstable/3.4.0
- version/xen xen-unstable/3.4.1
- version/xen xen-unstable/3.4.2
- version/xen xen-unstable/3.4.3
- version/xen xen-unstable/3.4.4
- version/xen xen-unstable/4.0.0
- version/xen xen-unstable/4.0.1
- version/xen xen-unstable/4.0.2
- version/xen xen-unstable/4.0.3
- version/xen xen-unstable/4.0.4
- version/xen xen-unstable/4.1.0
- version/xen xen-unstable/4.1.1
- version/xen xen-unstable/4.1.2
- version/xen xen-unstable/4.1.3
- version/xen xen-unstable/4.1.4
- version/xen xen-unstable/4.2.0
- version/xen xen-unstable/4.2.1
- version/xen xen-unstable/4.2.2