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.

How to fix CVE-2013-4434

To remediate CVE-2013-4434, upgrade the affected package to a fixed version below.

• Debian/dropbear—upgrade to 2012.55-1.4 or later

Is CVE-2013-4434 being exploited?

Low — EPSS is 1.9%, meaning exploitation activity has not been observed at scale.

Affected packages (1)

• from 0, < 2012.55-1.4

References (1)

• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2013-4434