USN-4268-1: OpenSMTPD vulnerability
OpenSMTPD vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 19.10
- Ubuntu 18.04 LTS
Summary
OpenSMTPD could be made to run programs as root if it received specially
crafted input over the network.
Software Description
- opensmtpd – secure, reliable, lean, and easy-to configure SMTP server
Details
It was discovered that OpenSMTPD incorrectly verified the sender’s or
receiver’s e-mail addresses under certain conditions. An attacker could use
this vulnerability to execute arbitrary commands as root.
Update instructions
The problem can be corrected by updating your system to the following package versions:
- Ubuntu 19.10
- opensmtpd – 6.0.3p1-6ubuntu0.1
- Ubuntu 18.04 LTS
- opensmtpd – 6.0.3p1-1ubuntu0.1
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.
References
Source: USN-4268-1: OpenSMTPD vulnerability
