CVE-2016-3159

The fpu_fxrstor function in arch/x86/i387.c in Xen 4.x does not properly handle writes to the hardware FSW.ES bit when running on AMD64 processors, which allows local guest OS users to obtain sensitive register content information from another guest by leveraging pending exception and mask bits. NOTE: this vulnerability exists because of an incorrect fix for CVE-2013-2076.

• CWE-200
• CWE-284

• http://lists.fedoraproject.org/pipermail/package-announce/2016-April/181699.htmlMailing List, Third Party Advisory
• http://lists.fedoraproject.org/pipermail/package-announce/2016-April/181729.htmlMailing List, Third Party Advisory
• http://support.citrix.com/article/CTX209443Third Party Advisory
• http://www.debian.org/security/2016/dsa-3554Third Party Advisory
• http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.htmlThird Party Advisory
• http://www.securityfocus.com/bid/85716Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1035435Third Party Advisory, VDB Entry
• http://xenbits.xen.org/xsa/advisory-172.htmlPatch, Vendor Advisory
• http://xenbits.xen.org/xsa/xsa172.patchPatch, Vendor Advisory
• http://lists.fedoraproject.org/pipermail/package-announce/2016-April/181699.htmlMailing List, Third Party Advisory
• http://lists.fedoraproject.org/pipermail/package-announce/2016-April/181729.htmlMailing List, Third Party Advisory
• http://support.citrix.com/article/CTX209443Third Party Advisory
• http://www.debian.org/security/2016/dsa-3554Third Party Advisory
• http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.htmlThird Party Advisory
• http://www.securityfocus.com/bid/85716Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1035435Third Party Advisory, VDB Entry
• http://xenbits.xen.org/xsa/advisory-172.htmlPatch, Vendor Advisory
• http://xenbits.xen.org/xsa/xsa172.patchPatch, Vendor Advisory

Published

Apr 13, 2016

Last Modified

Jun 17, 2026

Status

Modified

• Uncovering a hidden BOLA in Appsmith's snapshot logicStrix autonomously discovered a BOLA/IDOR vulnerability in Appsmith's snapshot deletion path.
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