| Name | CVE-2021-38084 |
| 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 989375 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| courier (PTS) | jessie | 0.73.1-1.6 | vulnerable |
| stretch | 0.76.3-5+deb9u1 | vulnerable |
| buster | 1.0.6-1 | vulnerable |
| bullseye, bookworm | 1.0.16-3 | vulnerable |
| sid | 1.0.16-3.2 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| courier | source | (unstable) | (unfixed) | | | 989375 |
Notes
[bookworm] - courier <no-dsa> (Minor issue)
[bullseye] - courier <no-dsa> (Minor issue)
[buster] - courier <no-dsa> (Minor issue)
[stretch] - courier <postponed> (Minor issue, include in next update)
https://sourceforge.net/p/courier/mailman/courier-imap/thread/cone.1382574216.483027.8082.1000%40monster.email-scan.com/#msg31555583
https://sourceforge.net/p/courier/mailman/message/37329216/
https://sourceforge.net/p/courier/courier-libs.git/ci/97ed62b17a2616c758d09105b5a14dd1038cff6f/ (1.1.5)
[jessie] - courier <postponed> (Minor issue, requires STARTTLS and MiTM)