CVE-2021-28374 describes a vulnerability in the Debian courier-authlib package (versions prior to 0.71.1-2) where weak permissions on the /run/courier/authdaemon directory allow unauthorized access to sensitive user information. This includes user existence, UID/GID, home/Maildir paths, quota, and potentially cleartext passwords depending on configuration. With a CVSS score of 7.5 (HIGH), this vulnerability is remotely exploitable with low attack complexity, leading to high confidentiality impact. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 0.71.1-2CPE matchmatch criteria | cpe:2.3:a:debian:courier-authlib:*:*:*:*:*:*:*:* | ||
9.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.