CVE-2017-20002
published 2021-03-17CVE-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…
high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
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.
Affected
7 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | shadow | < shadow 1:4.5-1 (bookworm) | shadow 1:4.5-1 (bookworm) |
| debian | shadow | — | — |
| shadow_project | shadow | >= 0 < 1:4.5-1 | 1:4.5-1 |
| shadow_project | shadow | >= 0 < 1:4.5-1 | 1:4.5-1 |
| shadow_project | shadow | >= 0 < 1:4.5-1 | 1:4.5-1 |
| shadow_project | shadow | >= 0 < 1:4.5-1 | 1:4.5-1 |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH