Downstairs.dnsalias Home FTP Server 1.10.1.139 input validation

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability was found in Downstairs.dnsalias Home FTP Server 1.10.1.139. It has been declared as problematic. The impacted element is an unknown function. Such manipulation leads to input validation. This vulnerability is uniquely identified as CVE-2009-4051. Moreover, an exploit is present.

Detailsinfo

A vulnerability was found in Downstairs.dnsalias Home FTP Server 1.10.1.139 (File Transfer Software) and classified as problematic. Affected by this issue is some unknown processing. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is availability. CVE summarizes:

Home FTP Server 1.10.1.139 allows remote attackers to cause a denial of service (daemon outage) via multiple invalid SITE INDEX commands.

The weakness was disclosed 11/23/2009 (Website). The advisory is available at vupen.com. This vulnerability is handled as CVE-2009-4051. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are unknown but a public exploit is available.

A public exploit has been developed in Python. The exploit is available at securityfocus.com. It is declared as proof-of-concept.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at X-Force (54301), Exploit-DB (9852), SecurityFocus (BID 37033†) and Vulnerability Center (SBV-31180†). The entry VDB-50884 is pretty similar. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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OpenVAS ID: 100351
OpenVAS Name: Home FTP Server SITE INDEX Command Remote Denial of Service Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/16/2009 🔍
11/23/2009 +6 days 🔍
11/23/2009 +0 days 🔍
11/23/2009 +0 days 🔍
04/26/2011 +519 days 🔍
03/18/2015 +1422 days 🔍
09/29/2025 +3848 days 🔍

Sourcesinfo

Advisory: vupen.com⛔
Status: Not defined

CVE: CVE-2009-4051 (🔍)
GCVE (CVE): GCVE-0-2009-4051
GCVE (VulDB): GCVE-100-50882
X-Force: 54301
SecurityFocus: 37033
Vulnerability Center: 31180 - Home FTP Server 1.10.1.139 Remote DoS Vulnerability via Multiple Invalid SITE INDEX Commands, Medium

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 03/18/2015 15:15
Updated: 09/29/2025 09:23
Changes: 03/18/2015 15:15 (52), 03/21/2017 11:54 (9), 08/28/2021 03:12 (3), 09/29/2025 09:23 (19)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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