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CVE
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CVE-2014-7155Date: (C)2014-10-06   (M)2023-12-22


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.

CVSS Score and Metrics +CVSS Score and Metrics -

CVSS V2 Severity:
CVSS Score : 5.8
Exploit Score: 6.5
Impact Score: 6.4
 
CVSS V2 Metrics:
Access Vector: ADJACENT_NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality: PARTIAL
Integrity: PARTIAL
Availability: PARTIAL
  
Reference:
SECTRACK-1030888
SECUNIA-61858
SECUNIA-61890
BID-70057
DSA-3041
FEDORA-2014-12000
FEDORA-2014-12036
GLSA-201412-42
http://support.citrix.com/article/CTX200218
http://xenbits.xen.org/xsa/advisory-105.html
openSUSE-SU-2014:1279
openSUSE-SU-2014:1281

CPE    41
cpe:/o:fedoraproject:fedora:20
cpe:/o:xen:xen:4.1.6.1
cpe:/o:opensuse:opensuse:12.3
cpe:/o:xen:xen:4.1.0
...
CWE    1
CWE-264
OVAL    13
oval:org.secpod.oval:def:601797
oval:org.secpod.oval:def:108686
oval:org.secpod.oval:def:108802
oval:org.secpod.oval:def:108879
...

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