CVE-2017-20002
The Debian shadow package before 1:4.5-1 for Shadow incorrectly lists pts/0 and pts/1 as physical terminals in /etc/securetty. This allows local users to login as password-less users even if they are connected by non-physical means such as SSH (hence bypassing PAM's nullok_secure configuration). This notably affects environments such as virtual machines automatically generated with a default blank root password, allowing all local users to escalate privileges.
- Score
- CVSS 3.1 7.8 High
- Status
- Modified - cve@mitre.org
- Published
- 2021-03-17
- Last modified
- 2024-08-05
- Weaknesses
- CWE-269
Affected products
References
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=877374
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=914957
- https://lists.debian.org/debian-lts-announce/2021/03/msg00020.html