| Name | CVE-2020-27780 |
| Description | A flaw was found in Linux-Pam in versions prior to 1.5.1 in the way it handle empty passwords for non-existing users. When the user doesn't exist PAM try to authenticate with root and in the case of an empty password it successfully authenticate. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| pam (PTS) | jessie | 1.1.8-3.1+deb8u2 | fixed |
| stretch | 1.1.8-3.6 | fixed |
| buster | 1.3.1-5 | fixed |
| bullseye | 1.4.0-9+deb11u1 | fixed |
| bookworm | 1.5.2-6+deb12u1 | fixed |
| sid, trixie | 1.5.3-7 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| pam | source | (unstable) | (not affected) | | | |
Notes
- pam <not-affected> (Only affects 1.5.0)
https://github.com/linux-pam/linux-pam/issues/284
Introduced by: https://github.com/linux-pam/linux-pam/commit/af0faf666c5008e54dfe43684f210e3581ff1bca (v1.5.0)
Fixed by: https://github.com/linux-pam/linux-pam/commit/30fdfb90d9864bcc254a62760aaa149d373fd4eb