CVE-2013-4434

Name	CVE-2013-4434
Description	Dropbear SSH Server before 2013.59 generates error messages for a failed logon attempt with different time delays depending on whether the user account exists, which allows remote attackers to discover valid usernames.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	726118

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
dropbear (PTS)	bookworm	2022.83-1+deb12u3	fixed
	trixie (security), trixie	2025.89-1~deb13u1	fixed
	forky, sid	2026.94-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
dropbear	source	(unstable)	2012.55-1.4	low		726118

[squeeze] - dropbear <no-dsa> (Minor issue)
[wheezy] - dropbear <no-dsa> (Minor issue)