National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2013-4434 Detail

Current 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.

Source:  MITRE
View Analysis Description

Impact

CVSS v2.0 Severity and Metrics:

Base Score: 5.0 MEDIUM
Vector: (AV:N/AC:L/Au:N/C:P/I:N/A:N) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 10.0


Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): None
Availability (A): None
Additional Information:
Allows unauthorized disclosure of information

References to Advisories, Solutions, and Tools

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Hyperlink 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://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

Technical Details

Vulnerability Type (View All)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:dropbear_ssh_project:dropbear_ssh:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (excluding)
2013.59


Change History

4 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2013-4434
NVD Published Date:
10/25/2013
NVD Last Modified:
10/30/2018