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USN-4268-1: OpenSMTPD vulnerability

5 February 2020

OpenSMTPD could be made to run programs as root if it received specially crafted input over the network.

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Releases

Packages

  • 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.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 19.10
Ubuntu 18.04

In general, a standard system update will make all the necessary changes.

References

Related notices

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Further reading