Matt Johnston Dropbear SSH Server up to 0.36 Error Message numeric error

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.1	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in Matt Johnston Dropbear SSH Server up to 0.36 and classified as problematic. This issue affects some unknown processing of the component Error Message Handler. Performing a manipulation results in numeric error. This vulnerability is known as CVE-2013-4434. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Matt Johnston Dropbear SSH Server up to 0.36 (SSH Server Software). It has been classified as problematic. This affects an unknown part of the component Error Message Handler. The manipulation with an unknown input leads to a numeric error vulnerability. CWE is classifying the issue as CWE-189. This is going to have an impact on confidentiality. The summary by CVE is:

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.

The weakness was published 10/25/2013 (Website). It is possible to read the advisory at secure.ucc.asn.au. This vulnerability is uniquely identified as CVE-2013-4434 since 06/12/2013. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 70545 (Dropbear SSH Server < 2013.59 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Misc.. The commercial vulnerability scanner Qualys is able to test this issue with plugin 166334 (OpenSuSE Security Update for dropbear (openSUSE-SU-2013:1696-1)).

Upgrading to version 0.37 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (70545), SecurityFocus (BID 62993†), Secunia (SA55173†) and Vulnerability Center (SBV-42040†). Similar entries are available at VDB-65354 and VDB-81407. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• SSH Server Software

Vendor

• Matt Johnston

Name

• Dropbear SSH Server

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7
• 0.8
• 0.9
• 0.10
• 0.11
• 0.12
• 0.13
• 0.14
• 0.15
• 0.16
• 0.17
• 0.18
• 0.19
• 0.20
• 0.21
• 0.22
• 0.23
• 0.24
• 0.25
• 0.26
• 0.27
• 0.28
• 0.29
• 0.30
• 0.31
• 0.32
• 0.33
• 0.34
• 0.35
• 0.36

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Numeric error
CWE: CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 70545
Nessus Name: Dropbear SSH Server < 2013.59 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Dropbear SSH Server 0.37

Timelineinfo

06/12/2013 🔍
10/10/2013 +120 days 🔍
10/11/2013 +1 days 🔍
10/22/2013 +11 days 🔍
10/25/2013 +3 days 🔍
10/25/2013 +0 days 🔍
03/24/2015 +515 days 🔍
01/08/2022 +2482 days 🔍

Sourcesinfo

Advisory: secure.ucc.asn.au
Status: Not defined
Confirmation: 🔍

CVE: CVE-2013-4434 (🔍)
GCVE (CVE): GCVE-0-2013-4434
GCVE (VulDB): GCVE-100-65355
SecurityFocus: 62993
Secunia: 55173 - Dropbear SSH Server User Enumeration Weakness and Denial of Service Vulnerability, Moderately Critical
Vulnerability Center: 42040 - Dropbear <2013.59 Remote Information Disclosure Vulnerability due to Inconsistent Delays, Medium

See also: 🔍

Entryinfo

Created: 03/24/2015 15:54
Updated: 01/08/2022 22:25
Changes: 03/24/2015 15:54 (64), 05/14/2017 09:07 (4), 01/08/2022 22:25 (3)
Complete: 🔍
Cache ID: 216:5F4:103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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