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Ubuntu: 4268-1 OpenSMTPD Critical Command Execution Risk

ubuntu
Calendar Grey February 5, 2020
Dist Ubuntu Esm H88
An OpenSMTPD flaw compromises Ubuntu, enabling remote execution of commands as root due to inadequate input validation.
OpenSMTPD could be made to run programs as root if it received specially crafted input over the network.

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.

Topics%20covered

Topics Covered

security advisory critical command execution remote access Ubuntu software issue OpenSMTPD

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

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

References

CVE-2020-7247

Severity
critical
Lowest
Low
Medium
High
Critical

February 05, 2020

Topics%20covered

Topics Covered

security advisory critical command execution remote access Ubuntu software issue OpenSMTPD

Package Information

https://launchpad.net/ubuntu/+source/opensmtpd/6.0.3p1-6ubuntu0.1
https://launchpad.net/ubuntu/+source/opensmtpd/6.0.3p1-1ubuntu0.1

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