CVE-2013-4368

Xen < 4.3.0 - Unauthorized Sensitive Information Exposure via Uninitialized Segment Base

Title source: llm
STIX 2.1

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 obtain sensitive information (hypervisor stack content) via unspecified vectors related to stale data in a segment register.

References (9)

Core 9
Core References
Third Party Advisory vendor-advisory x_refsource_gentoo
http://security.gentoo.org/glsa/glsa-201407-03.xml
Mailing List mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2013/10/10/10
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/87799
Vendor Advisory vendor-advisory x_refsource_redhat
http://rhn.redhat.com/errata/RHSA-2013-1449.html
Third Party Advisory vendor-advisory x_refsource_debian
http://www.debian.org/security/2014/dsa-3006
Mailing List vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-updates/2013-11/msg00009.html

Scores

EPSS 0.0009
EPSS Percentile 26.0%

Details

CWE
CWE-200
Status published
Products (34)
xen/xen 3.0.2
xen/xen 3.0.3
xen/xen 3.0.4
xen/xen 3.1.3
xen/xen 3.1.4
xen/xen 3.2.0
xen/xen 3.2.1
xen/xen 3.2.2
xen/xen 3.2.3
xen/xen 3.3.0
... and 24 more
Published Oct 17, 2013
Tracked Since Feb 18, 2026