CVE-2017-9525 — MEDIUM (6.7)

Q: How severe is CVE-2017-9525?

CVE-2017-9525 has been rated MEDIUM with a CVSS base score of 6.7/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2017-9525?

Check the references section above for vendor advisories and patch information. Affected products include: Cron Project Cron, Canonical Ubuntu Linux, Debian Debian Linux.

Vulnerability 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.

CVSS Score

6.7

MEDIUM

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

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Cron Project	Cron	<= 3.0pl1-128.
Canonical	Ubuntu Linux	All versions
Debian	Debian Linux	All versions

Related Weaknesses (CWE)

CWE-59

References

http://bugs.debian.org/864466Issue TrackingThird Party AdvisoryVendor Advisory
http://www.openwall.com/lists/oss-security/2017/06/08/3Mailing ListThird Party Advisory
http://www.securitytracker.com/id/1038651Third Party AdvisoryVDB Entry
https://lists.debian.org/debian-lts-announce/2019/03/msg00025.htmlMailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/10/msg00029.htmlMailing ListThird Party Advisory
http://bugs.debian.org/864466Issue TrackingThird Party AdvisoryVendor Advisory
http://www.openwall.com/lists/oss-security/2017/06/08/3Mailing ListThird Party Advisory
http://www.securitytracker.com/id/1038651Third Party AdvisoryVDB Entry
https://lists.debian.org/debian-lts-announce/2019/03/msg00025.htmlMailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/10/msg00029.htmlMailing ListThird Party Advisory

FAQ

What is CVE-2017-9525?

CVE-2017-9525 is a vulnerability with a CVSS score of 6.7 (MEDIUM). 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 agai...

How severe is CVE-2017-9525?

CVE-2017-9525 has been rated MEDIUM with a CVSS base score of 6.7/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2017-9525?

Check the references section above for vendor advisories and patch information. Affected products include: Cron Project Cron, Canonical Ubuntu Linux, Debian Debian Linux.