CVE-2013-4434

NameCVE-2013-4434
DescriptionDropbear 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs726118

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
dropbear (PTS)buster2018.76-5+deb10u1fixed
buster (security)2018.76-5+deb10u2fixed
bullseye2020.81-3+deb11u1fixed
bookworm2022.83-1+deb12u1fixed
sid, trixie2024.85-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
dropbearsource(unstable)2012.55-1.4low726118

Notes

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

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