Recursive qsort() Vulnerability in OpenBSD 6.1 and Earlier Versions

CVE-2017-1000373 · MEDIUM Severity

AV:N/AC:L/AU:N/C:N/I:P/A:P

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.

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