Description
In the cron package through 3.0pl1-128 on Debian, and through 3.0pl1-128ubuntu2 on Ubuntu, the postinst maintainer script allows for group-crontab-to-root privilege escalation via symlink attacks against unsafe usage of the chown and chmod programs.
References (5)
Core 5
Core References
Issue Tracking, Third Party Advisory, Vendor Advisory x_refsource_misc
http://bugs.debian.org/864466
Mailing List, Third Party Advisory x_refsource_misc
http://www.openwall.com/lists/oss-security/2017/06/08/3
Third Party Advisory, VDB Entry vdb-entry
x_refsource_sectrack
http://www.securitytracker.com/id/1038651
Mailing List, Third Party Advisory mailing-list
x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2019/03/msg00025.html
Mailing List, Third Party Advisory mailing-list
x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2021/10/msg00029.html
Scores
CVSS v3
6.7
EPSS
0.0055
EPSS Percentile
41.7%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-59
Status
published
Products (3)
cron_project/cron
< 3.0pl1-128.
debian/debian_linux
8.0
debian/debian_linux
9.0
Published
Jun 09, 2017
Tracked Since
Feb 18, 2026