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CVE-2015-7813

Date: October 30, 2015

Xen 4.4.x, 4.5.x, and 4.6.x does not limit the number of printk console messages when reporting unimplemented hypercalls, which allows local guests to cause a denial of service via a sequence of (1) HYPERVISOR_physdev_op hypercalls, which are not properly handled in the do_physdev_op function in arch/arm/physdev.c, or (2) HYPERVISOR_hvm_op hypercalls, which are not properly handled in the do_hvm_op function in arch/arm/hvm.c.

Language: C

Severity Score

Related Resources (9)

http://xenbits.xen.org/xsa/advisory-146.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171185.html
https://security.gentoo.org/glsa/201604-03
http://www.debian.org/security/2015/dsa-3414
https://nvd.nist.gov/vuln/detail/CVE-2015-7813
http://www.securitytracker.com/id/1034029
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171249.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171082.html
https://www.mend.io/vulnerability-database/CVE-2015-7813

Severity Score

Weakness Type (CWE)

Resource Management Errors

CWE-399

CVSS v3.1

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

CVSS v2

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

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