Rhinosoft Serv-U 9.0.0.5 memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.1$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Rhinosoft Serv-U 9.0.0.5. Affected by this issue is some unknown functionality. The manipulation leads to memory corruption. This vulnerability is documented as CVE-2009-4873. Additionally, an exploit exists.

Detailsinfo

A vulnerability was found in Rhinosoft Serv-U 9.0.0.5 (File Transfer Software). It has been rated as very critical. This issue affects an unknown code. 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:

Stack-based buffer overflow in the HTTP server in Rhino Software Serv-U Web Client 9.0.0.5 allows remote attackers to cause a denial of service (server crash) or execute arbitrary code via a long Session cookie.

The weakness was released 05/26/2010 (Website). It is possible to read the advisory at vupen.com. The identification of this vulnerability is CVE-2009-4873. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are unknown but a public exploit is available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 11/17/2025).

A public exploit has been developed in Perl. The exploit is available at securityfocus.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 42934 (Serv-U < 9.1.0.0), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FTP. The commercial vulnerability scanner Qualys is able to test this issue with plugin 116671 (Serv-U Web Client HTTP Request Remote Buffer Overflow Vulnerability).

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 Exploit-DB (9966), Tenable (42934), SecurityFocus (BID 36895†) and Vulnerability Center (SBV-24060†). Entry connected to this vulnerability is available at VDB-50858. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 9.1

VulDB Base Score: 10.0
VulDB Temp Score: 9.1
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: 🔍
Access: Public
Status: Proof-of-Concept
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 42934
Nessus Name: Serv-U < 9.1.0.0
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 100332
OpenVAS Name: Serv-U Web Client HTTP Request Remote Buffer Overflow Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍
McAfee IPS: 🔍
McAfee IPS Version: 🔍

Timelineinfo

11/01/2009 🔍
11/01/2009 +0 days 🔍
11/16/2009 +15 days 🔍
05/26/2010 +190 days 🔍
05/26/2010 +0 days 🔍
05/26/2010 +0 days 🔍
03/19/2015 +1758 days 🔍
11/17/2025 +3896 days 🔍

Sourcesinfo

Advisory: vupen.com⛔
Status: Not defined

CVE: CVE-2009-4873 (🔍)
GCVE (CVE): GCVE-0-2009-4873
GCVE (VulDB): GCVE-100-53351
SecurityFocus: 36895 - RhinoSoft Serv-U Web Client HTTP Request Remote Buffer Overflow Vulnerability
Secunia: 37228
Vulnerability Center: 24060 - Rhino Serv-U Web Client 9.0.5 Buffer Overflow Remote Arbitrary Code execution Vulnerability, Medium

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

Entryinfo

Created: 03/19/2015 12:22
Updated: 11/17/2025 05:07
Changes: 03/19/2015 12:22 (57), 02/17/2017 11:20 (13), 09/14/2021 09:09 (3), 09/14/2021 09:12 (1), 02/03/2025 07:54 (20), 11/17/2025 05:07 (2)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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