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CVE-2013-1917

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Date: May 13, 2013

Xen 3.1 through 4.x, when running 64-bit hosts on Intel CPUs, does not clear the NT flag when using an IRET after a SYSENTER instruction, which allows PV guest users to cause a denial of service (hypervisor crash) by triggering a #GP fault, which is not properly handled by another IRET instruction.

Language: C

Severity Score

Related Resources (5)

http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html
http://www.openwall.com/lists/oss-security/2013/04/18/8
https://nvd.nist.gov/vuln/detail/CVE-2013-1917
http://www.debian.org/security/2012/dsa-2662
https://www.mend.io/vulnerability-database/CVE-2013-1917

Severity Score

Weakness Type (CWE)

Input Validation

CWE-20

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): ADJACENT_NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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