CVE-2019-12953 Information disclosure in n/a

Medium 5.3 Published 30 Dec 2020 Updated 4 Aug 2024

An attacker can reveal valid usernames on Dropbear SSH servers due to inconsistent failure delays, aiding in targeted attacks.

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

What is CVE-2019-12953?

CVE-2019-12953 is a medium-severity vulnerability in n/a, published on 30 Dec 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Dropbear 2011.54 through 2018.76 has an inconsistent failure delay that may lead to revealing valid usernames, a different issue than CVE-2018-15599.

Weakness: CWE-203

Which versions are affected by CVE-2019-12953?

It affects 1 product.

Products include Dropbear Ssh Project Dropbear Ssh.

How do I fix CVE-2019-12953?

Upgrade to a fixed version.

Is CVE-2019-12953 being exploited?

There is no known exploitation of CVE-2019-12953 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2019-12953, GHSA-6hj9-w8vp-p698, UBUNTU-CVE-2019-12953.