CVSS2
Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:A/AC:L/Au:N/C:P/I:P/A:P
AI Score
Confidence
High
EPSS
Percentile
26.7%
The x86_emulate function in arch/x86/x86_emulate/x86_emulate.c in Xen 4.4.x and earlier does not properly check supervisor mode permissions, which allows local HVM users to cause a denial of service (guest crash) or gain guest kernel mode privileges via vectors involving an (1) HLT, (2) LGDT, (3) LIDT, or (4) LMSW instruction.
Vendor | Product | Version | CPE |
---|---|---|---|
xen | xen | * | cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:* |
xen | xen | 3.0.2 | cpe:2.3:o:xen:xen:3.0.2:*:*:*:*:*:*:* |
xen | xen | 3.0.3 | cpe:2.3:o:xen:xen:3.0.3:*:*:*:*:*:*:* |
xen | xen | 3.0.4 | cpe:2.3:o:xen:xen:3.0.4:*:*:*:*:*:*:* |
xen | xen | 3.1.3 | cpe:2.3:o:xen:xen:3.1.3:*:*:*:*:*:*:* |
xen | xen | 3.1.4 | cpe:2.3:o:xen:xen:3.1.4:*:*:*:*:*:*:* |
xen | xen | 3.2.0 | cpe:2.3:o:xen:xen:3.2.0:*:*:*:*:*:*:* |
xen | xen | 3.2.1 | cpe:2.3:o:xen:xen:3.2.1:*:*:*:*:*:*:* |
xen | xen | 3.2.2 | cpe:2.3:o:xen:xen:3.2.2:*:*:*:*:*:*:* |
xen | xen | 3.2.3 | cpe:2.3:o:xen:xen:3.2.3:*:*:*:*:*:*:* |
lists.fedoraproject.org/pipermail/package-announce/2014-October/140418.html
lists.fedoraproject.org/pipermail/package-announce/2014-October/140483.html
lists.opensuse.org/opensuse-security-announce/2014-10/msg00002.html
lists.opensuse.org/opensuse-security-announce/2014-10/msg00003.html
secunia.com/advisories/61858
secunia.com/advisories/61890
security.gentoo.org/glsa/glsa-201412-42.xml
support.citrix.com/article/CTX200218
www.debian.org/security/2014/dsa-3041
www.securityfocus.com/bid/70057
www.securitytracker.com/id/1030888
xenbits.xen.org/xsa/advisory-105.html