CVE-2017-1000372

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.

9.8

CVSS

Severity: Critical

CVSS 3.0 •

CVSS 2.0 •

EPSS 5.37% Top 15%

Vendor Advisory openbsd.org

Affected: n/a n/a

References

Link	Tags
https://www.qualys.com/2017/06/19/stack-clash/stack-clash.txt	third party advisory mailing list
http://www.securityfocus.com/bid/99172	vdb entry third party advisory
https://ftp.openbsd.org/pub/OpenBSD/patches/6.1/common/008_exec_subr.patch.sig	mailing list vendor advisory

Frequently Asked Questions

What is the severity of CVE-2017-1000372?: CVE-2017-1000372 has been scored as a critical severity vulnerability.
How to fix CVE-2017-1000372?: To fix CVE-2017-1000372, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-1000372 being actively exploited in the wild?: It is possible that CVE-2017-1000372 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~5% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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