Intrusion Prevention

Dovecot.Submission-Login.and.LMTP.Infinite.Loop.DoS

Description

This indicates an attack attempt to exploit a Denial of Service Vulnerability in Dovecot.
The vulnerability is due to infinite loop in the submission-login and lmtp components when processing truncated command parameters. Successful exploitation will result in the application consuming 100% CPU and becoming unresponsive, leading to a denial-of-service condition.

Affected Products

Dovecot Dovecot 2.3.9 and prior

Impact

Denial of Service: Remote attackers can crash vulnerable systems.

Recommended Actions

Apply the most recent upgrade or patch from the vendor.
https://dovecot.org/pipermail/dovecot-news/2020-February/000431.html

CVE References

CVE-2020-7046