CVE-2013-4434

N/A Unknown
Published: October 25, 2013 Modified: April 29, 2026
View on NVD

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.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

Login to generate AI explanation

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2013-10/msg00061.html
Source: secalert@redhat.com
Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2013-11/msg00046.html
Source: secalert@redhat.com
Third Party Advisory
http://secunia.com/advisories/55173
Source: secalert@redhat.com
Vendor Advisory
http://www.openwall.com/lists/oss-security/2013/10/16/11
Source: secalert@redhat.com
Mailing List Third Party Advisory
http://www.securityfocus.com/bid/62993
Source: secalert@redhat.com
Third Party Advisory VDB Entry
https://matt.ucc.asn.au/dropbear/CHANGES
Source: secalert@redhat.com
Vendor Advisory
https://secure.ucc.asn.au/hg/dropbear/rev/d7784616409a
Source: secalert@redhat.com
Patch Third Party Advisory
https://support.citrix.com/article/CTX216642
Source: secalert@redhat.com
Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2013-10/msg00061.html
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2013-11/msg00046.html
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://secunia.com/advisories/55173
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
http://www.openwall.com/lists/oss-security/2013/10/16/11
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Third Party Advisory
http://www.securityfocus.com/bid/62993
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory VDB Entry
https://matt.ucc.asn.au/dropbear/CHANGES
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
https://secure.ucc.asn.au/hg/dropbear/rev/d7784616409a
Source: af854a3a-2127-422b-91ae-364da2661108
Patch Third Party Advisory
https://support.citrix.com/article/CTX216642
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory

16 reference(s) from NVD

Quick Stats

CVSS v3 Score
N/A / 10.0
EPSS (Exploit Probability)
1.9%
83th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

dropbear_ssh_project