Dropbear SSH Server 0.34 Login format string

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.
9.4	$0-$5k	0.00

A vulnerability has been found in Dropbear SSH Server 0.34 (SSH Server Software) and classified as very critical. Affected by this vulnerability is some unknown functionality of the component Login. The manipulation with an unknown input leads to a format string vulnerability. The CWE definition for the vulnerability is CWE-134. The product uses a function that accepts a format string as an argument, but the format string originates from an external source. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was disclosed 08/18/2003 by Joel Eriksson. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 02/14/2019).

The vulnerability scanner Nessus provides a plugin with the ID 11821 (Dropbear SSH Server Username Remote Format String), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Misc. and running in the context r.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (12927) and Tenable (11821). The entry 81898 is pretty similar.

Productinfo

Type

SSH Server Software

Vendor

Dropbear

Name

SSH Server

Version

0.34

License

open-source

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.4

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
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: 🔍

Exploitinginfo

Class: Format string
CWE: CWE-134 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Nessus ID: 11821
Nessus Name: Dropbear SSH Server Username Remote Format String
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/18/2003 🔍
08/18/2003 +0 days 🔍
08/18/2003 +0 days 🔍
08/20/2003 +2 days 🔍
09/01/2003 +12 days 🔍
07/01/2016 +4687 days 🔍
02/14/2019 +958 days 🔍

Sourcesinfo

Researcher: Joel Eriksson
Status: Not defined
X-Force: 12927
Vulnerability Center: 1852 - Dropbear SSH Server Format String Attack During Login Enables Arbitrary Code Execution, High
SecurityFocus: 8439 - Dropbear SSH Server Username Format String Vulnerability

See also: 🔍

Entryinfo

Created: 07/01/2016 10:05
Updated: 02/14/2019 15:45
Changes: 07/01/2016 10:05 (39), 02/14/2019 15:45 (17)
Complete: 🔍