VulnerabilityModified
CVE-2013-1917
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…
LOW 1.9EPSS 0.37%
Does this matter?
Lower severity and a low EPSS score (0.37%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 2.0
- 1.9 LOWAV:L/AC:M/Au:N/C:N/I:N/A:P
- EPSS
- 0.37% probability · 31th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- xen/xen
- Source
- secalert@redhat.com
References
- 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
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.