PT-2017-2389 · Netbsd+1 · Netbsd+1

Published 2017-06-19 · Updated 2019-10-03 · CVE-2017-1000372

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions OpenBSD versions 6.1 and earlier NetBSD (affected versions not specified)

Description The issue is related to a flaw in the implementation of the stack guard page, which can be bypassed, allowing for arbitrary code execution. This can be achieved by using specially crafted setuid binaries, such as /usr/bin/at. The estimated number of potentially affected devices is not provided, and there is no information about real-world incidents where this issue was exploited.

Recommendations For OpenBSD versions 6.1 and earlier, update to a version that includes a fix for this issue. For NetBSD, at the moment, there is no information about a newer version that contains a fix for this vulnerability. As a temporary workaround, consider restricting access to setuid binaries, such as at, to minimize the risk of exploitation.

Exploit

Improper Access Control

Weakness Enumeration

CWE-284

Related Identifiers

BDU:2017-01592

CVE-2017-1000372

Affected Products

Netbsd

Openbsd

References · 7

• 🔥 https://github.com/qazbnm456/awesome-cve-poc/blob/master/Stack-Clash.md · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2017-1000372 · Security Note
• https://ftp.openbsd.org/pub/OpenBSD/patches/6.1/common/008_exec_subr.patch.sig · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2017-1000372 · Vendor Advisory
• https://bdu.fstec.ru/vul/2017-01592 · Security Note
• https://qualys.com/2017/06/19/stack-clash/stack-clash.txt · Note
• http://securityfocus.com/bid/99172 · Note