CVE-2017-1000372

Severity: critical (CVSS 9.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 4.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-06-19 · updated 2026-06-17

Description

A flaw exists in OpenBSD's implementation of the stack guard page that allows attackers to bypass it resulting in arbitrary code execution using setuid binaries such as /usr/bin/at. This affects OpenBSD 6.1 and possibly earlier versions.

Affected products

OpenBSD: through 6.1

References

http://www.securityfocus.com/bid/99172
https://ftp.openbsd.org/pub/OpenBSD/patches/6.1/common/008_exec_subr.patch.sig
https://www.qualys.com/2017/06/19/stack-clash/stack-clash.txt
http://www.securityfocus.com/bid/99172
https://ftp.openbsd.org/pub/OpenBSD/patches/6.1/common/008_exec_subr.patch.sig
https://www.qualys.com/2017/06/19/stack-clash/stack-clash.txt

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