Debian Security Advisory
DLA-2625-1 courier-authlib -- LTS security update
- Date Reported:
- 14 Apr 2021
- Affected Packages:
- Security database references:
- In the Debian bugtracking system: Bug 984810.
In Mitre's CVE dictionary: CVE-2021-28374.
- More information:
The Debian courier-authlib package before 0.71.1-2 for Courier Authentication Library creates a /run/courier/authdaemon directory with weak permissions, allowing an attacker to read user information. This may include a cleartext password in some configurations. In general, it includes the user's existence, uid and gids, home and/or Maildir directory, quota, and some type of password information (such as a hash).
For Debian 9 stretch, this problem has been fixed in version 0.66.4-9+deb9u1.
We recommend that you upgrade your courier-authlib packages.
For the detailed security status of courier-authlib please refer to its security tracker page at: https://security-tracker.debian.org/tracker/courier-authlib
Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS