CVE-2017-14316

A parameter verification issue was discovered in Xen through 4.9.x. The function `alloc_heap_pages` allows callers to specify the first NUMA node that should be used for allocations through the `memflags` parameter; the node is extracted using the `MEMF_get_node` macro. While the function checks to see if the special constant `NUMA_NO_NODE` is specified, it otherwise does not handle the case where `node >= MAX_NUMNODES`. This allows an out-of-bounds access to an internal array.

CVSS v3.0 8.8 HIGH
CVSS v2.0 7.2 HIGH

8.8^/10

CVSS v3.0 : HIGH

Vector : AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Exploitability : 2.0 / Impact : 6.0

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

7.2^/10

CVSS v2.0 : HIGH

Vector : AV:L/AC:L/Au:N/C:C/I:C/A:C

Exploitability : 3.9 / Impact : 10.0

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
http://xenbits.xen.org/xsa/advisory-231.html	Patch Vendor Advisory
http://www.securitytracker.com/id/1039348	Third Party Advisory VDB Entry
http://www.securityfocus.com/bid/100818	VDB Entry Third Party Advisory
https://support.citrix.com/article/CTX227185
https://www.debian.org/security/2017/dsa-4050
https://lists.debian.org/debian-lts-announce/2018/10/msg00009.html

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Configurations

Configuration 1 (hide)

cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*

Information

Published : 2017-09-12 08:29

Updated : 2018-10-19 03:29

NVD link : CVE-2017-14316

Mitre link : CVE-2017-14316

JSON object : View

CWE

CWE-125

Out-of-bounds Read

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Products Affected

xen

xen

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