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Fencer Vulns
low 2.1

CVE-2007-1856 json

Vixie Cron before 4.1-r10 on Gentoo Linux is installed with insecure permissions, which allows local users to cause a denial of service (cr…

published 2007-04-18 19 y ago modified 2026-06-16 4 mo ago also EUVD-2007-1850

cvss
2.1
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 32%
public exploits
0
none known

Summary

Vixie Cron before 4.1-r10 on Gentoo Linux is installed with insecure permissions, which allows local users to cause a denial of service (cron failure) by creating hard links, which results in a failed st_nlink check in database.c.

Patch / fix

  • vixie-cron RHEL 3 4.1-19.EL3
  • vixie-cron RHEL 4 4:4.1-47.EL4
  • vixie-cron RHEL 5 4:4.1-70.el5

red hat advisories RHSA-2007:0345

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-2007-1856 updated

crontab denial of service

  • Red Hat Desktop version 3 vixie-cron 4.1-19.EL3 Red Hat Enterprise Linux (v. 5 server) vixie-cron 4.1-70.el5 Red Hat Enterprise Linux AS version 3 vixie-cron 4.1-19.EL3 Red Hat Enterprise Linux AS version 4 vixie-cron 4.1-47.EL4 Red Hat Enterprise Linux Desktop (v. 5 client) vixie-cron 4.1-70.el5 Red Hat Enterprise Linux Desktop version 4 vixie-cron 4.1-47.EL4
    +4 more products
    Red Hat Enterprise Linux ES version 3 vixie-cron 4.1-19.EL3 Red Hat Enterprise Linux ES version 4 vixie-cron 4.1-47.EL4 Red Hat Enterprise Linux WS version 3 vixie-cron 4.1-19.EL3 Red Hat Enterprise Linux WS version 4 vixie-cron 4.1-47.EL4
    fixed: vendor fix RHSA-2007:0345

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

0.38% chance of exploitation in the next 30 days, higher than 32% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 2.1 AV:L/AC:L/Au:N/C:N/I:N/A:P

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.