Serv-U up to 7.3.0.2 path traversal

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.9$0-$5k0.00

A vulnerability was found in Serv-U up to 7.3.0.2 (File Transfer Software). It has been declared as critical. Affected by this vulnerability is an unknown code block. The manipulation with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Directory traversal vulnerability in the FTP server in Serv-U 7.0.0.1 through 7.3, including 7.2.0.1, allows remote authenticated users to overwrite or create arbitrary files via a ..\ (dot dot backslash) in the RNTO command.

The bug was discovered 10/03/2008. The weakness was presented 10/08/2008 (Website). The advisory is shared at vupen.com. This vulnerability is known as CVE-2008-4501 since 10/08/2008. The exploitation appears to be easy. The attack can be launched remotely. The requirement for exploitation is a single authentication. Technical details are unknown but a public exploit is available. MITRE ATT&CK project uses the attack technique T1006 for this issue.

It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 5 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 34398 (Serv-U 7.x < 7.3.0.1 Multiple Remote Vulnerabilities (DoS, Traversal)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FTP and running in the context r.

Upgrading eliminates this vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 8913.

The vulnerability is also documented in the databases at X-Force (45653), Tenable (34398) and Exploit-DB (6661). See 44412 for similar entry.

Productinfo

Type

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 7.9

VulDB Base Score: 8.8
VulDB Temp Score: 7.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Path traversal
CWE: CWE-22
ATT&CK: T1006

Local: No
Remote: Yes

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 34398
Nessus Name: Serv-U 7.x < 7.3.0.1 Multiple Remote Vulnerabilities (DoS, Traversal)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍
TippingPoint: 🔍
ISS Proventia IPS: 🔍
PaloAlto IPS: 🔍
Fortigate IPS: 🔍

Timelineinfo

10/03/2008 🔍
10/03/2008 +0 days 🔍
10/03/2008 +0 days 🔍
10/08/2008 +5 days 🔍
10/08/2008 +0 days 🔍
10/08/2008 +0 days 🔍
10/13/2008 +5 days 🔍
10/14/2008 +1 days 🔍
03/17/2015 +2345 days 🔍
08/02/2021 +2330 days 🔍

Sourcesinfo

Advisory: vupen.com⛔
Status: Not defined

CVE: CVE-2008-4501 (🔍)
X-Force: 45653
Vulnerability Center: 19703 - Serv-U 7.3 and 7.2.0.1 Directory Traversal Allows Remote Files Overwrite, High
SecurityFocus: 31556
Secunia: 32150
OSVDB: 49195 - CVE-2008-4501 - Serv-U - Directory Traversal Issue
Vupen: ADV-2008-2746

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

Entryinfo

Created: 03/17/2015 16:11
Updated: 08/02/2021 11:35
Changes: 03/17/2015 16:11 (64), 08/18/2019 09:50 (12), 08/02/2021 11:35 (4)
Complete: 🔍

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