Description
An issue was discovered in the POP3 component of Courier Mail Server before 1.1.5. Meddler-in-the-middle attackers can pipeline commands after the POP3 STLS command, injecting plaintext commands into an encrypted user session.
References (2)
Core 2
Core References
Third Party Advisory x_refsource_misc
https://sourceforge.net/p/courier/mailman/courier-imap/thread/cone.1382574216.483027.8082.1000%40monster.email-scan.com/#msg31555583
Third Party Advisory x_refsource_misc
https://sourceforge.net/p/courier/mailman/message/37329216/
Scores
CVSS v3
8.1
EPSS
0.0136
EPSS Percentile
68.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-74
Status
published
Products (1)
courier-mta/courier_mail_server
< 1.1.5
Published
Aug 03, 2021
Tracked Since
Feb 18, 2026