VDB
CVE-2017-20002
CVE-2017-20002
REJECTED
CVSS 7.800000190734863 HIGH
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.
EPSS 0.40% · 33.6th percentile
Risk Scores
CVSS 3.1
7.800000190734863
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score
0.40%
33.6th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:18.04:LTS | shadow | 0, 1:4.2-3.2ubuntu4, * |
| Ubuntu:16.04:LTS | shadow | *, *, * |
Timeline
- Mar 17, 2021 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Aug 24, 2021 EPSS Score
- Oct 26, 2021 EPSS Score
- Dec 28, 2021 EPSS Score
- Mar 1, 2022 EPSS Score
- May 2, 2022 EPSS Score
- Jul 4, 2022 EPSS Score
- Sep 6, 2022 EPSS Score
- Nov 8, 2022 EPSS Score
- Jan 9, 2023 EPSS Score
References
- https://ubuntu.com/security/CVE-2017-20002 third-party-advisory
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=877374 third-party-advisory
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=914957 third-party-advisory
- https://lists.debian.org/debian-lts-announce/2021/03/msg00020.html third-party-advisory
- https://www.cve.org/CVERecord?id=CVE-2017-20002 third-party-advisory