CVE-2017-1000373

Openbsd vulnerability

CVSS

6.5

EPSS

13.4%

EPSS pct

96th

Exploited

No known

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.

Affected vendor

Openbsd

Affected product

Openbsd

CVSS vector

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

Weakness type (CWE)

CWE-400 — Uncontrolled Resource Consumption

Published

2017-06-19

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to low impact to integrity, low impact to availability.

Its EPSS score of 13.4% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 96% of all scored CVEs.

Check your external exposure to CVE-2017-1000373

Confirm whether Openbsd Openbsd is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2017-1000373.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2017-1000373

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