CVE-2017-9525
MEDIUM severity · CVSS 6.7 · CWE-59
6.7CVSS MEDIUM
Summary
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.
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredHigh
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)1%
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Additional information
- NVD record
- http://bugs.debian.org/864466Advisory
- http://www.openwall.com/lists/oss-security/2017/06/08/3Advisory
- http://www.securitytracker.com/id/1038651Advisory
- https://lists.debian.org/debian-lts-announce/2019/03/msg00025.htmlAdvisory
- https://lists.debian.org/debian-lts-announce/2021/10/msg00029.htmlAdvisory