CVE-2013-4434
Dropbear SSH Server Authentication Information Disclosure
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.
INFO
Published Date :
Oct. 25, 2013, 11:55 p.m.
Last Modified :
Oct. 30, 2018, 4:28 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
2.9
Exploitability Score :
10.0
Public PoC/Exploit Available at Github
CVE-2013-4434 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2013-4434.
| URL | Resource |
|---|---|
| http://lists.opensuse.org/opensuse-updates/2013-10/msg00061.html | Third Party Advisory |
| http://lists.opensuse.org/opensuse-updates/2013-11/msg00046.html | Third Party Advisory |
| http://secunia.com/advisories/55173 | Vendor Advisory |
| http://www.openwall.com/lists/oss-security/2013/10/16/11 | Mailing List Third Party Advisory |
| http://www.securityfocus.com/bid/62993 | Third Party Advisory VDB Entry |
| https://matt.ucc.asn.au/dropbear/CHANGES | Vendor Advisory |
| https://secure.ucc.asn.au/hg/dropbear/rev/d7784616409a | Patch Third Party Advisory |
| https://support.citrix.com/article/CTX216642 | Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Dropbear user enumeration (CVE-2013-4434) PoC
Shell
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2013-4434 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2013-4434 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Sep. 20, 2018
Action Type Old Value New Value Changed Reference Type http://www.securityfocus.com/bid/62993 No Types Assigned http://www.securityfocus.com/bid/62993 Third Party Advisory, VDB Entry Changed Reference Type http://www.openwall.com/lists/oss-security/2013/10/16/11 No Types Assigned http://www.openwall.com/lists/oss-security/2013/10/16/11 Mailing List, Third Party Advisory Changed Reference Type https://secure.ucc.asn.au/hg/dropbear/rev/d7784616409a Exploit, Patch https://secure.ucc.asn.au/hg/dropbear/rev/d7784616409a Patch, Third Party Advisory Changed Reference Type http://lists.opensuse.org/opensuse-updates/2013-11/msg00046.html No Types Assigned http://lists.opensuse.org/opensuse-updates/2013-11/msg00046.html Third Party Advisory Changed Reference Type http://lists.opensuse.org/opensuse-updates/2013-10/msg00061.html No Types Assigned http://lists.opensuse.org/opensuse-updates/2013-10/msg00061.html Third Party Advisory Changed Reference Type https://matt.ucc.asn.au/dropbear/CHANGES No Types Assigned https://matt.ucc.asn.au/dropbear/CHANGES Vendor Advisory Changed Reference Type https://support.citrix.com/article/CTX216642 No Types Assigned https://support.citrix.com/article/CTX216642 Third Party Advisory Changed CPE Configuration OR *cpe:2.3:a:matt_johnston:dropbear_ssh_server:0.28:*:*:*:*:*:*:* *cpe:2.3:a:matt_johnston:dropbear_ssh_server:0.29:*:*:*:*:*:*:* *cpe:2.3:a:matt_johnston:dropbear_ssh_server:0.30:*:*:*:*:*:*:* *cpe:2.3:a:matt_johnston:dropbear_ssh_server:0.31:*:*:*:*:*:*:* *cpe:2.3:a:matt_johnston:dropbear_ssh_server:0.32:*:*:*:*:*:*:* *cpe:2.3:a:matt_johnston:dropbear_ssh_server:0.33:*:*:*:*:*:*:* *cpe:2.3:a:matt_johnston:dropbear_ssh_server:0.34:*:*:*:*:*:*:* *cpe:2.3:a:matt_johnston:dropbear_ssh_server:0.35:*:*:*:*:*:*:* *cpe:2.3:a:matt_johnston:dropbear_ssh_server:0.36:*:*:*:*:*:*:* *cpe:2.3:a:matt_johnston:dropbear_ssh_server:0.37:*:*:*:*:*:*:* *cpe:2.3:a:matt_johnston:dropbear_ssh_server:0.38:*:*:*:*:*:*:* *cpe:2.3:a:matt_johnston:dropbear_ssh_server:0.39:*:*:*:*:*:*:* *cpe:2.3:a:matt_johnston:dropbear_ssh_server:0.40:*:*:*:*:*:*:* *cpe:2.3:a:matt_johnston:dropbear_ssh_server:0.41:*:*:*:*:*:*:* *cpe:2.3:a:matt_johnston:dropbear_ssh_server:0.42:*:*:*:*:*:*:* *cpe:2.3:a:matt_johnston:dropbear_ssh_server:0.43:*:*:*:*:*:*:* *cpe:2.3:a:matt_johnston:dropbear_ssh_server:0.44:*:*:*:*:*:*:* *cpe:2.3:a:matt_johnston:dropbear_ssh_server:0.44:test1:*:*:*:*:*:* *cpe:2.3:a:matt_johnston:dropbear_ssh_server:0.44:test2:*:*:*:*:*:* *cpe:2.3:a:matt_johnston:dropbear_ssh_server:0.44:test3:*:*:*:*:*:* *cpe:2.3:a:matt_johnston:dropbear_ssh_server:0.44:test4:*:*:*:*:*:* *cpe:2.3:a:matt_johnston:dropbear_ssh_server:0.45:*:*:*:*:*:*:* *cpe:2.3:a:matt_johnston:dropbear_ssh_server:0.46:*:*:*:*:*:*:* *cpe:2.3:a:matt_johnston:dropbear_ssh_server:0.47:*:*:*:*:*:*:* *cpe:2.3:a:matt_johnston:dropbear_ssh_server:0.48:*:*:*:*:*:*:* *cpe:2.3:a:matt_johnston:dropbear_ssh_server:0.48.1:*:*:*:*:*:*:* *cpe:2.3:a:matt_johnston:dropbear_ssh_server:0.49:*:*:*:*:*:*:* *cpe:2.3:a:matt_johnston:dropbear_ssh_server:0.50:*:*:*:*:*:*:* *cpe:2.3:a:matt_johnston:dropbear_ssh_server:0.51:*:*:*:*:*:*:* *cpe:2.3:a:matt_johnston:dropbear_ssh_server:0.52:*:*:*:*:*:*:* *cpe:2.3:a:matt_johnston:dropbear_ssh_server:0.53:*:*:*:*:*:*:* *cpe:2.3:a:matt_johnston:dropbear_ssh_server:0.53.1:*:*:*:*:*:*:* *cpe:2.3:a:matt_johnston:dropbear_ssh_server:2011.54:*:*:*:*:*:*:* *cpe:2.3:a:matt_johnston:dropbear_ssh_server:2012.55:*:*:*:*:*:*:* *cpe:2.3:a:matt_johnston:dropbear_ssh_server:2013.56:*:*:*:*:*:*:* *cpe:2.3:a:matt_johnston:dropbear_ssh_server:2013.57:*:*:*:*:*:*:* *cpe:2.3:a:matt_johnston:dropbear_ssh_server:*:*:*:*:*:*:*:* versions up to (including) 2013.58 OR *cpe:2.3:a:dropbear_ssh_project:dropbear_ssh:*:*:*:*:*:*:*:* versions up to (excluding) 2013.59 -
CVE Modified by [email protected]
Nov. 15, 2017
Action Type Old Value New Value Added Reference https://support.citrix.com/article/CTX216642 [No Types Assigned] -
CVE Modified by [email protected]
Nov. 28, 2016
Action Type Old Value New Value Added Reference http://www.securityfocus.com/bid/62993 [No Types Assigned] -
Initial Analysis by [email protected]
Oct. 28, 2013
Action Type Old Value New Value
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2013-4434 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2013-4434
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
2.12 }} -0.85%
score
0.89105
percentile