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.
References
Link | Resource |
---|---|
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=877374 | Mailing List Vendor Advisory |
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=914957 | Exploit Mailing List Vendor Advisory |
https://lists.debian.org/debian-lts-announce/2021/03/msg00020.html | Mailing List Vendor Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: mitre
Published: 2021-03-17T06:00:09
Updated: 2021-03-18T03:57:29
Reserved: 2021-03-17T00:00:00
Link: CVE-2017-20002
JSON object: View
NVD Information
Status : Analyzed
Published: 2021-03-17T06:15:12.107
Modified: 2021-06-07T14:58:56.823
Link: CVE-2017-20002
JSON object: View
Redhat Information
No data.
CWE