OpenSMTPD: Multiple vulnerabilities — GLSA 202105-12

Multiple vulnerabilities have been found in OpenSMTPD, the worst of which could result in a Denial of Service condition.

Affected packages

mail-mta/opensmtpd on all architectures
Affected versions < 6.8.0_p2
Unaffected versions >= 6.8.0_p2

Background

OpenSMTPD is a lightweight but featured SMTP daemon from OpenBSD.

Description

Multiple vulnerabilities have been discovered in OpenSMTPD. Please review the CVE identifiers referenced below for details.

Impact

A remote attacker, by connecting to the SMTP listener daemon, could possibly cause a Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

All OpenSMTPD users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=mail-mta/opensmtpd-6.8.0_p2"
 

References

Release date
May 26, 2021

Latest revision
May 26, 2021: 1

Severity
low

Exploitable
local, remote

Bugzilla entries