Debian Security Advisory

DSA-4611-1 opensmtpd -- security update

Date Reported:
29 Jan 2020
Affected Packages:
Security database references:
In the Debian bugtracking system: Bug 950121.
In Mitre's CVE dictionary: CVE-2020-7247.
More information:

Qualys discovered that the OpenSMTPD SMTP server performed insufficient validation of email addresses which could result in the execution of arbitrary commands as root. In addition this update fixes a denial of service by triggering an opportunistic TLS downgrade.

For the oldstable distribution (stretch), these problems have been fixed in version 6.0.2p1-2+deb9u2.

For the stable distribution (buster), these problems have been fixed in version 6.0.3p1-5+deb10u3. This update also includes non-security bugfixes which were already lined up for the Buster 10.3 point release.

We recommend that you upgrade your opensmtpd packages.

For the detailed security status of opensmtpd please refer to its security tracker page at: