CVE-2017-14316

HIGH

Description

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.

References

http://www.securityfocus.com/bid/100818

http://www.securitytracker.com/id/1039348

http://xenbits.xen.org/xsa/advisory-231.html

https://lists.debian.org/debian-lts-announce/2018/10/msg00009.html

https://support.citrix.com/article/CTX227185

https://www.debian.org/security/2017/dsa-4050

Details

Source: MITRE

Published: 2017-09-12

Updated: 2018-10-19

Type: CWE-125

Risk Information

CVSS v2.0

Base Score: 7.2

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

Impact Score: 10

Exploitability Score: 3.9

Severity: HIGH

CVSS v3.0

Base Score: 8.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Impact Score: 6

Exploitability Score: 2

Severity: HIGH