Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2012-3495

Severity CVSS v4.0:
Pending analysis
Type:
CWE-20 Input Validation
Publication date:
23/11/2012
Last modified:
11/04/2025

Description

The physdev_get_free_pirq hypercall in arch/x86/physdev.c in Xen 4.1.x and Citrix XenServer 6.0.2 and earlier uses the return value of the get_free_pirq function as an array index without checking that the return value indicates an error, which allows guest OS users to cause a denial of service (invalid memory write and host crash) and possibly gain privileges via unspecified vectors.

Impact

Vector 2.0
AV:L/AC:L/Au:N/C:P/I:P/A:C CVSS v2.0 Severity and Metrics:

Base Score: 6.10 MEDIUM
Vector: AV:L/AC:L/Au:N/C:P/I:P/A:C

Attack Vector (AV): Local
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): Complete

Base Score 2.0
6.10
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:citrix:xenserver:*:*:*:*:*:*:*:* 6.0.2 (including)
cpe:2.3:a:citrix:xenserver:5.0:*:*:*:*:*:*:*
cpe:2.3:a:citrix:xenserver:5.5:*:*:*:*:*:*:*
cpe:2.3:a:citrix:xenserver:5.6:*:*:*:*:*:*:*
cpe:2.3:a:citrix:xenserver:5.6:fp1:*:*:*:*:*:*
cpe:2.3:a:citrix:xenserver:5.6:sp2:*:*:*:*:*:*
cpe:2.3:a:citrix:xenserver:6.0:*:*:*:*:*:*:*
cpe:2.3:o:xen:xen:4.1.0:*:*:*:*:*:*:*
cpe:2.3:o:xen:xen:4.1.1:*:*:*:*:*:*:*
cpe:2.3:o:xen:xen:4.1.2:*:*:*:*:*:*:*
cpe:2.3:o:xen:xen:4.1.3:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools