CVE-2017-1000373

6.5 mediumEPSS 13%

Medium (6.5) in openbsd openbsd. EPSS 13% chance of exploitation in the next 30 days.

The OpenBSD qsort() function is recursive, and not randomized, an attacker can construct a pathological input array of N elements that causes qsort() to deterministically recurse N/4 times. This allows attackers to consume arbitrary amounts of stack memory and manipulate stack memory to assist in arbitrary code execution attacks. This affects OpenBSD 6.1 and possibly earlier versions.

Severity

CVSS 3.0

6.5 medium

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

EPSS: 13% chance of exploitation in the next 30 days; higher than 96% of CVEs (scores of 2026-10-31)
CWE: CWE-400
Published: 2017-06-19
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

openbsd:openbsd

References

http://www.securityfocus.com/bid/99177
http://www.securitytracker.com/id/1039427
https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/lib/libc/stdlib/qsort.c?rev=1.15&content-type=text/x-cvsweb-markup
https://support.apple.com/HT208112
https://support.apple.com/HT208113

Check your stack JSON