Directory Permission Vulnerability in Courier Authentication Library from Debian
CVE-2021-28374

7.5HIGH

Key Information:

Vendor

Debian
Status
Courier-authlib
Vendor
CVE Published:
15 March 2021

What is CVE-2021-28374?

The Courier Authentication Library in the Debian courier-authlib package prior to version 0.71.1-2 contains a vulnerability that allows for improper permissions on the /run/courier/authdaemon directory. This weakness could allow an unauthorized attacker access to sensitive user information, including user existence, UID, GIDs, home directories, and potentially cleartext passwords under certain configurations. This exposure poses significant risks to the security and privacy of user accounts.

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References

https://bugs.debian.org/984810
x_refsource_MISC
https://lists.debian.org/debian-lts-announce/2021/04/msg0...
mailing-listx_refsource_MLIST

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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