Vulnerability Details CVE-2016-6259
Xen 4.5.x through 4.7.x do not implement Supervisor Mode Access Prevention (SMAP) whitelisting in 32-bit exception and event delivery, which allows local 32-bit PV guest OS kernels to cause a denial of service (hypervisor and VM crash) by triggering a safety check.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 41.9%
CVSS Severity
CVSS v3 Score 6.2
CVSS v2 Score 4.9
References
- http://support.citrix.com/article/CTX214954
- http://www.securityfocus.com/bid/92130
- http://www.securitytracker.com/id/1036447
- http://xenbits.xen.org/xsa/advisory-183.html
- http://xenbits.xen.org/xsa/xsa183-4.6.patch
- http://xenbits.xen.org/xsa/xsa183-unstable.patch
- http://support.citrix.com/article/CTX214954
- http://www.securityfocus.com/bid/92130
- http://www.securitytracker.com/id/1036447
- http://xenbits.xen.org/xsa/advisory-183.html
- http://xenbits.xen.org/xsa/xsa183-4.6.patch
- http://xenbits.xen.org/xsa/xsa183-unstable.patch
Products affected by CVE-2016-6259
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cpe:2.3:a:citrix:xenserver:6.0
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cpe:2.3:a:citrix:xenserver:6.0.2
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cpe:2.3:a:citrix:xenserver:6.1
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cpe:2.3:a:citrix:xenserver:6.2.0
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cpe:2.3:a:citrix:xenserver:6.5.0
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cpe:2.3:a:citrix:xenserver:7.0
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cpe:2.3:o:xen:xen:4.5.0
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cpe:2.3:o:xen:xen:4.5.1
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cpe:2.3:o:xen:xen:4.5.2
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cpe:2.3:o:xen:xen:4.5.3
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cpe:2.3:o:xen:xen:4.6.0
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cpe:2.3:o:xen:xen:4.6.1
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cpe:2.3:o:xen:xen:4.6.3
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cpe:2.3:o:xen:xen:4.7.0