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
02 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
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 0.37% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 30.9% of scored records. A rank, not a probability.
- NVD base score
- The NVD has published no score for this record
- NVD CVSS vector
- No NVD score to derive
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-16.
- Red Hat severity
- Important. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2013-05-13 23:00Z13 YR AGO
- Last updated
- 2024-08-06 15:20Z2 YR AGO
- Reserved
- 2013-02-19
- Assigning CNA
- redhat
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-20Improper Input ValidationClass
- Data version
- 5.1
- Document digest
- 875f4f5e2b21c7219bc39c57b7c1f20bc07bf1e84adb2e2ed7ae592944551bd5
05 Affected products
06 References
- lists.opensuse.orgSUSE-SU-2014:0470http://lists.opensuse.org/opensuse-security-announce/2014-04/msg00000.html
- secunia.com55082http://secunia.com/advisories/55082
- www.securitytracker.com1028455http://www.securitytracker.com/id/1028455
- security.gentoo.orgGLSA-201309-24http://security.gentoo.org/glsa/glsa-201309-24.xml
- lists.opensuse.orgopenSUSE-SU-2013:0912http://lists.opensuse.org/opensuse-updates/2013-06/msg00049.html
- www.openwall.com[oss-security] 20130418 Xen Security Advisory 44 (CVE-2013-1917) - Xen PV DoS vulnerability with SYSENTERhttp://www.openwall.com/lists/oss-security/2013/04/18/8
- www.debian.orgDSA-2662http://www.debian.org/security/2012/dsa-2662
- lists.opensuse.orgSUSE-SU-2014:0446http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html
- lists.fedoraproject.orgFEDORA-2013-6723http://lists.fedoraproject.org/pipermail/package-announce/2013-May/104537.html
- lists.opensuse.orgSUSE-SU-2014:0411http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00015.html
07 Fixed in
Debian 12
- xen Fixed in 4.1.4-3
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- xen Fixed in 4.1.4-3
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- xen Fixed in 4.1.4-3
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.