Vulnerability Monitor

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CVE-2017-9525

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.

Published

2017-06-09T16:29:02.110

Last Modified

2025-04-20T01:37:25.860

Status

Deferred

Source

[email protected]

Severity

CVSSv3.1: 6.7 (MEDIUM)

CVSSv2 Vector

AV:L/AC:M/Au:N/C:C/I:C/A:C

Access Vector: LOCAL
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: COMPLETE
Integrity Impact: COMPLETE
Availability Impact: COMPLETE

Exploitability Score

3.4

Impact Score

10.0

Weaknesses

Type: Primary
CWE-59

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	cron_project	cron	≤ 3.0pl1-128.	Yes
Operating System	canonical	ubuntu_linux	*	No
Operating System	debian	debian_linux	*	No
Operating System	debian	debian_linux	8.0	Yes
Operating System	debian	debian_linux	9.0	Yes

References

http://bugs.debian.org/864466 Issue Tracking, Third Party Advisory, Vendor Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2017/06/08/3 Mailing List, Third Party Advisory ([email protected])
http://www.securitytracker.com/id/1038651 Third Party Advisory, VDB Entry ([email protected])
https://lists.debian.org/debian-lts-announce/2019/03/msg00025.html Mailing List, Third Party Advisory ([email protected])
https://lists.debian.org/debian-lts-announce/2021/10/msg00029.html Mailing List, Third Party Advisory ([email protected])
http://bugs.debian.org/864466 Issue Tracking, Third Party Advisory, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2017/06/08/3 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id/1038651 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2019/03/msg00025.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2021/10/msg00029.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)