| Name | CVE-2020-8793 |
| Description | OpenSMTPD before 6.6.4 allows local users to read arbitrary files (e.g., on some Linux distributions) because of a combination of an untrusted search path in makemap.c and race conditions in the offline functionality in smtpd.c. |
| 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 | 952453 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| opensmtpd (PTS) | stretch (security), stretch (lts), stretch | 6.0.2p1-2+deb9u3 | fixed |
| buster (security), buster, buster (lts) | 6.0.3p1-5+deb10u4 | fixed |
| bullseye | 6.8.0p2-3 | fixed |
| bookworm | 6.8.0p2-4 | fixed |
| sid, trixie | 7.5.0p0-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| opensmtpd | source | stretch | 6.0.2p1-2+deb9u3 | | | |
| opensmtpd | source | buster | 6.0.3p1-5+deb10u4 | | | |
| opensmtpd | source | (unstable) | 6.6.4p1-1 | unimportant | | 952453 |
Notes
https://www.openwall.com/lists/oss-security/2020/02/24/4
https://ftp.openbsd.org/pub/OpenBSD/patches/6.6/common/021_smtpd_envelope.patch.sig
https://poolp.org/posts/2020-01-30/opensmtpd-advisory-dissected/
Neutralised by kernel hardening