CVE-2019-9704

Name: CVE-2019-9704
Creator: NVD / NIST
Published: 2019-03-12T01:29:00.24+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.35%

Last modified Jun 17, 2026

CVE-2019-9704 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. Vixie Cron before the 3.0pl1-133 Debian package allows local users to cause a denial of service (daemon crash) via a large crontab file because the calloc return value is not checked.. EPSS estimates a 0.35% chance of exploitation in the next 30 days.

Description

Vixie Cron before the 3.0pl1-133 Debian package allows local users to cause a denial of service (daemon crash) via a large crontab file because the calloc return value is not checked.

Metrics

CVSS 3.1

5.5/10

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

EPSS Probability

0.35%

26.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Cron Project	Cron	< 3.0pl1-133
Fedoraproject	Fedora	29
Debian	Debian Linux	8.0
Debian	Debian Linux	9.0

References

http://www.securityfocus.com/bid/107373Third Party Advisory, VDB Entry
https://lists.debian.org/debian-lts-announce/2019/03/msg00025.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/10/msg00029.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6DU7HAUAQR4E4AEBPYLUV6FZ4PHKH6A2/
https://salsa.debian.org/debian/cron/commit/f2525567Patch, Third Party Advisory
http://www.securityfocus.com/bid/107373Third Party Advisory, VDB Entry
https://lists.debian.org/debian-lts-announce/2019/03/msg00025.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/10/msg00029.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6DU7HAUAQR4E4AEBPYLUV6FZ4PHKH6A2/
https://salsa.debian.org/debian/cron/commit/f2525567Patch, Third Party Advisory

Timeline

Published: Mar 12, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-9704?

Vixie Cron before the 3.0pl1-133 Debian package allows local users to cause a denial of service (daemon crash) via a large crontab file because the calloc return value is not checked.

How severe is CVE-2019-9704?

CVE-2019-9704 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.35% probability of exploitation in the next 30 days.

How do I fix CVE-2019-9704?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-9704?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST