CVE-2013-4368
The outs instruction emulation in Xen 3.1.x, 4.2.x, 4.3.x, and earlier, when using FS: or GS: segment override, uses an uninitialized variable as a segment base, which allows local 64-bit PV guests to
02 Description
The outs instruction emulation in Xen 3.1.x, 4.2.x, 4.3.x, and earlier, when using FS: or GS: segment override, uses an uninitialized variable as a segment base, which allows local 64-bit PV guests to
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
- 0.36% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 30.3% 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
- Moderate. 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
- 2013-10-17 23:00Z13 YR AGO
- Last updated
- 2024-08-06 16:38Z2 YR AGO
- Reserved
- 2013-06-12
- Assigning CNA
- redhat
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-200Exposure of Sensitive Information to an Unauthorized ActorClass
- Data version
- 5.1
- Document digest
- 4ba5a8eac54aad254143b2e81dd4fba555d0ee553dc2c578a96effcf4298643d
05 Affected products
06 References
- lists.opensuse.orgSUSE-SU-2014:0470http://lists.opensuse.org/opensuse-security-announce/2014-04/msg00000.html
- security.gentoo.orgGLSA-201407-03http://security.gentoo.org/glsa/glsa-201407-03.xml
- www.openwall.com[oss-security] 20131010 Xen Security Advisory 67 (CVE-2013-4368) - Information leak through outs instruction emulationhttp://www.openwall.com/lists/oss-security/2013/10/10/10
- exchange.xforce.ibmcloud.comxen-cve20134368-info-disc(87799)https://exchange.xforce.ibmcloud.com/vulnerabilities/87799
- rhn.redhat.comRHSA-2013:1449http://rhn.redhat.com/errata/RHSA-2013-1449.html
- lists.opensuse.orgSUSE-SU-2014:0446http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html
- www.debian.orgDSA-3006http://www.debian.org/security/2014/dsa-3006
- lists.opensuse.orgSUSE-SU-2014:0411http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00015.html
- lists.opensuse.orgopenSUSE-SU-2013:1636http://lists.opensuse.org/opensuse-updates/2013-11/msg00009.html
07 Fixed in
Debian 12
- xen Fixed in 4.4.0-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- xen Fixed in 4.4.0-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- xen Fixed in 4.4.0-1
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.