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Fencer Vulns
medium 5.5

CVE-2019-9704 json

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 bec…

published 2019-03-12 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-19070

cvss
5.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 30%
public exploits
0
none known

Summary

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.

Patch / fix

  • cron_project cron 3.0pl1-133
  • cron Debian 14, Debian 13, Debian 12 3.0pl1-133

debian advisories DEBIAN-CVE-2019-9704

  • cron Ubuntu 18.04 LTS 3.0pl1-128.1ubuntu1.1
  • cron Ubuntu Pro 16.04 LTS 3.0pl1-128ubuntu2+esm1

ubuntu advisories UBUNTU-CVE-2019-9704

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • cronie SLES for SAP 12 SP4, SLES 12 SP4, SLED 12 SP4 1.4.11-59.10.1
  • cronie SLE Module for Basesystem 15 SP1, SLE Module for Basesystem 15 1.5.1-6.7.1

suse advisories SUSE-SU-2019:1990-1SUSE-SU-2019:1389-2SUSE-SU-2019:1389-1

  • cronie openSUSE Tumbleweed 1.5.7-86.1
  • cronie openSUSE Leap 15.1, openSUSE Leap 15.0 1.5.1-lp151.4.3.1

opensuse advisories openSUSE-SU-2024:10701-1openSUSE-SU-2019:1520-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-9704 updated cvss 3.3

vixie-cron: calloc return value resulting in remote dos

  • Red Hat Enterprise Linux 5 vixie-cron
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux 6 cronie, cronie-anacron, cronie-noanacron
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 7 cronie, cronie-anacron, cronie-noanacron Red Hat Enterprise Linux 8 cronie, cronie-anacron, cronie-noanacron
    affected: no fix planned “Will not fix”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.36% chance of exploitation in the next 30 days, higher than 30% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 2.1 AV:L/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.