Matt Johnston Dropbear SSH Server up to 0.46 memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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5.7$0-$5k0.00

Summaryinfo

A vulnerability was found in Matt Johnston Dropbear SSH Server up to 0.46. It has been classified as critical. This affects an unknown function. The manipulation leads to memory corruption. This vulnerability is documented as CVE-2005-4178. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Matt Johnston Dropbear SSH Server up to 0.46 (SSH Server Software). It has been rated as critical. This issue affects an unknown code block. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Buffer overflow in Dropbear server before 0.47 allows authenticated users to execute arbitrary code via unspecified inputs that cause insufficient memory to be allocated due to an incorrect expression that does not enforce the proper order of operations.

The bug was discovered 12/19/2005. The weakness was released 12/12/2005 (Website). It is possible to read the advisory at matt.ucc.asn.au. The identification of this vulnerability is CVE-2005-4178 since 12/12/2005. The exploitation is known to be easy. The attack may be initiated remotely. The requirement for exploitation is a simple authentication. The technical details are unknown and an exploit is not publicly available.

It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 22789 (Debian DSA-923-1 : dropbear - buffer overflow), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 38507 (Dropbear SSH Server Remote Buffer Overflow Vulnerability).

Upgrading to version 0.47 eliminates this vulnerability. A possible mitigation has been published 1 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (23672), Tenable (22789), SecurityFocus (BID 15923†), OSVDB (21847†) and Secunia (SA18108†). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.3
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 22789
Nessus Name: Debian DSA-923-1 : dropbear - buffer overflow
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 56051
OpenVAS Name: Debian Security Advisory DSA 923-1 (dropbear)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: Dropbear SSH Server 0.47

Timelineinfo

12/12/2005 🔍
12/12/2005 +0 days 🔍
12/12/2005 +0 days 🔍
12/19/2005 +7 days 🔍
12/19/2005 +0 days 🔍
12/19/2005 +0 days 🔍
12/19/2005 +0 days 🔍
01/03/2006 +15 days 🔍
10/14/2006 +284 days 🔍
03/11/2015 +3070 days 🔍
06/28/2025 +3762 days 🔍

Sourcesinfo

Advisory: matt.ucc.asn.au
Status: Confirmed

CVE: CVE-2005-4178 (🔍)
GCVE (CVE): GCVE-0-2005-4178
GCVE (VulDB): GCVE-100-27431
X-Force: 23672
SecurityFocus: 15923 - Dropbear SSH Server Remote Buffer Overflow Vulnerability
Secunia: 18108 - Dropbear SSH Server Buffer Overflow Vulnerability, Moderately Critical
OSVDB: 21847 - Dropbear - SSH Server Remote Buffer Overflow Issue
Vulnerability Center: 10093 - Dropbear Buffer Overflow in svr-chansession.c, High
Vupen: ADV-2005-2962

Entryinfo

Created: 03/11/2015 23:39
Updated: 06/28/2025 23:01
Changes: 03/11/2015 23:39 (77), 06/13/2019 08:06 (4), 06/28/2025 23:01 (20)
Complete: 🔍
Cache ID: 216:458:103

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