| Name | CVE-2020-28896 |
| Description | Mutt before 2.0.2 and NeoMutt before 2020-11-20 did not ensure that $ssl_force_tls was processed if an IMAP server's initial server response was invalid. The connection was not properly closed, and the code could continue attempting to authenticate. This could result in authentication credentials being exposed on an unencrypted connection, or to a machine-in-the-middle. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-2472-1, ELA-325-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| mutt (PTS) | jessie, jessie (lts) | 1.5.23-3+deb8u7 | fixed |
| stretch (security) | 1.7.2-1+deb9u6 | fixed | |
| stretch (lts), stretch | 1.7.2-1+deb9u7 | fixed | |
| buster | 1.10.1-2.1+deb10u6 | fixed | |
| buster (security) | 1.10.1-2.1+deb10u7 | fixed | |
| bullseye (security), bullseye | 2.0.5-4.1+deb11u3 | fixed | |
| bookworm | 2.2.12-0.1~deb12u1 | fixed | |
| bookworm (security) | 2.2.9-1+deb12u1 | fixed | |
| sid, trixie | 2.2.12-0.1 | fixed | |
| neomutt (PTS) | buster | 20180716+dfsg.1-1+deb10u2 | fixed |
| buster (security) | 20180716+dfsg.1-1+deb10u1 | vulnerable | |
| bullseye | 20201127+dfsg.1-1.2 | fixed | |
| bookworm | 20220429+dfsg1-4.1 | fixed | |
| sid, trixie | 20231103+dfsg1-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| mutt | source | jessie | 1.5.23-3+deb8u4 | ELA-325-1 | ||
| mutt | source | stretch | 1.7.2-1+deb9u4 | DLA-2472-1 | ||
| mutt | source | buster | 1.10.1-2.1+deb10u4 | |||
| mutt | source | (unstable) | 2.0.2-1 | |||
| neomutt | source | buster | 20180716+dfsg.1-1+deb10u2 | |||
| neomutt | source | (unstable) | 20201120+dfsg.1-1 |
https://gitlab.com/muttmua/mutt/-/commit/04b06aaa3e0cc0022b9b01dbca2863756ebbf59a
https://github.com/neomutt/neomutt/commit/9c36717a3e2af1f2c1b7242035455ec8112b4b06