CVE-2017-1000365

HIGH

Description

The Linux Kernel imposes a size restriction on the arguments and environmental strings passed through RLIMIT_STACK/RLIM_INFINITY (1/4 of the size), but does not take the argument and environment pointers into account, which allows attackers to bypass this limitation. This affects Linux Kernel versions 4.11.5 and earlier. It appears that this feature was introduced in the Linux Kernel version 2.6.23.

References

http://www.debian.org/security/2017/dsa-3927

http://www.debian.org/security/2017/dsa-3945

http://www.securityfocus.com/bid/99156

https://access.redhat.com/security/cve/CVE-2017-1000365

https://www.qualys.com/2017/06/19/stack-clash/stack-clash.txt

Details

Source: MITRE

Published: 2017-06-19

Updated: 2017-11-04

Type: CWE-264

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: 7.8

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

Impact Score: 5.9

Exploitability Score: 1.8

Severity: HIGH