CVE-2024-43688

HIGH

Published Aug 20, 2024 Modified Apr 15, 2026 CWE-787

Description

cron/entry.c in vixie cron before 9cc8ab1, as used in OpenBSD 7.4 and 7.5, allows a heap-based buffer underflow and memory corruption. NOTE: this issue was introduced during a May 2023 refactoring.

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CVSS v3.1 Score

7.3

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Weakness Type (CWE)

CWE-787 Out-of-bounds Write

References

Other References

https://github.com/vixie/cron/commit/9cc8ab1087bb9ab861dd5595c41200683c9f6712 https://www.supernetworks.org/CVE-2024-43688/openbsd-cron-heap-underflow.txt https://www.supernetworks.org/advisories/CVE-2024-43688-openbsd-cron-heap-underflow.txt

Frequently Asked Questions

What is CVE-2024-43688? +

cron/entry.c in vixie cron before 9cc8ab1, as used in OpenBSD 7.4 and 7.5, allows a heap-based buffer underflow and memory corruption. NOTE: this issue was introduced during a May 2023 refactoring. It has a CVSS v3.1 base score of 7.3 (HIGH).

How severe is CVE-2024-43688? +

CVE-2024-43688 has a CVSS v3.1 score of 7.3 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

How do I check if I'm vulnerable to CVE-2024-43688? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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