CVE-2019-11494 Null dereference in n/a

High 7.5 Published 8 May 2019 Updated 4 Aug 2024

A null pointer dereference in Dovecot's submission-login service causes a crash when a client disconnects prematurely during authentication.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2019-11494?

CVE-2019-11494 is a high-severity vulnerability in Dovecot Dovecot, published on 8 May 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In the IMAP Server in Dovecot 2.3.3 through 2.3.5.2, the submission-login service crashes when the client disconnects prematurely during the AUTH command.

Weakness: CWE-476

Which versions are affected by CVE-2019-11494?

It affects 3 products.

Products include Dovecot Dovecot, Fedoraproject Fedora, Opensuse Leap.

How do I fix CVE-2019-11494?

Upgrade to a fixed version.

Is CVE-2019-11494 being exploited?

There is no known exploitation of CVE-2019-11494 in the wild and no public exploit code.

All Dovecot Dovecot vulnerabilities

Sources

Also known as ALPINE-CVE-2019-11494, DEBIAN-CVE-2019-11494, GHSA-gcm9-2h5w-j7x9.