Summary
It was discovered that OpenSMTPD incorrectly verified the sender's or
receiver's e-mail addresses under certain conditions. An attacker could
possibly use this vulnerability to execute arbitrary commands as root.
(CVE-2020-7247)
It was discovered that OpenSMTPD did not properly handle hardlinks under
certain conditions. An unprivileged local attacker could possibly use this
issue to obtain sensitive information. This issue only affected Ubuntu
16.04 ESM. (CVE-2020-8793)
It was discovered that OpenSMTPD mishandled certain input. A remote,
unauthenticated attacker could possibly use this vulnerability to execute
arbitrary shell commands as any non-root user. This issue only affected
Ubuntu 16.04 ESM. (CVE-2020-8794)
Fixed packages 2
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · Pro 14.04 LTS Pro:14.04:LTS | opensmtpd | 5.4.1p1-1ubuntu0.1~esm1 |
| Ubuntu · Pro 16.04 LTS Pro:16.04:LTS | opensmtpd | 5.7.3p2-1ubuntu0.1~esm2 |
Vulnerabilities 3
-
Critical 9.8
smtp_mailaddr in smtp_session.c in OpenSMTPD 6.6, as used in OpenBSD 6.6 and other products, allows remote attackers to…
KEV Mar 25, 2022 -
Unscored —CVE-2020-8793 Public exploit
OpenSMTPD before 6.6.4 allows local users to read arbitrary files (e.g., on some Linux distributions) because of a comb…
-
Unscored —
OpenSMTPD before 6.6.4 allows remote code execution because of an out-of-bounds read in mta_io in mta_session.c for mul…