CVE-2013-4434

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.

🔗 References (16)

• secalert@redhathttp://lists.opensuse.org/opensuse-updates/2013-10/msg00061.html
• secalert@redhathttp://lists.opensuse.org/opensuse-updates/2013-11/msg00046.html
• secalert@redhathttp://secunia.com/advisories/55173
• secalert@redhathttp://www.openwall.com/lists/oss-security/2013/10/16/11
• secalert@redhathttp://www.securityfocus.com/bid/62993
• secalert@redhathttps://matt.ucc.asn.au/dropbear/CHANGES
• secalert@redhathttps://secure.ucc.asn.au/hg/dropbear/rev/d7784616409a
• secalert@redhathttps://support.citrix.com/article/CTX216642
• af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-updates/2013-10/msg00061.html
• af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-updates/2013-11/msg00046.html
• af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/55173
• af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2013/10/16/11
• af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/62993
• af854a3a-2127-422b-91ae-364da2661108https://matt.ucc.asn.au/dropbear/CHANGES
• af854a3a-2127-422b-91ae-364da2661108https://secure.ucc.asn.au/hg/dropbear/rev/d7784616409a