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).
The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors.
Link | Tags |
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https://bugs.debian.org/984810 | mailing list vendor advisory |
https://lists.debian.org/debian-lts-announce/2021/04/msg00011.html | third party advisory mailing list |