CVE-2021-28374: High severity debian courier-authlib vulnerability
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).
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2021-28374?
CVE-2021-28374 has a medium severity level due to its potential to expose sensitive user information.
How do I fix CVE-2021-28374?
To fix CVE-2021-28374, upgrade the Debian courier-authlib package to version 0.71.1-2 or later.
What systems are affected by CVE-2021-28374?
CVE-2021-28374 affects Debian systems running courier-authlib versions earlier than 0.71.1-2.
What type of information can be exposed in CVE-2021-28374?
CVE-2021-28374 can expose user information, including potential cleartext passwords in certain configurations.
Is CVE-2021-28374 a local or remote vulnerability?
CVE-2021-28374 is primarily a local vulnerability, as it exploits directory permissions on the affected system.