Yaws Web Server 1.89 path traversal

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability has been found in Yaws Web Server 1.89 (Web Server) and classified as problematic. Affected by this vulnerability is some unknown processing. 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. The summary by CVE is:

Directory traversal vulnerability in Yaws 1.89 allows remote attackers to read arbitrary files via ..\ (dot dot backslash) and other sequences.

The weakness was disclosed 11/01/2010 by nitr0us (Website). It is possible to read the advisory at xforce.iss.net. This vulnerability is known as CVE-2010-4181. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are unknown but a public exploit is available. The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

A public exploit has been developed by nitr0us and been published immediately after the advisory. It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 10297 (Web Server Directory Traversal Arbitrary File Access), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Web Servers. The commercial vulnerability scanner Qualys is able to test this issue with plugin 86925 (Yaws Directory Traversal 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 X-Force (62917), Tenable (10297) and Exploit-DB (15371).






CPE 2.3info

CPE 2.2info


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VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.0

VulDB Base Score: 5.3
VulDB Temp Score: 5.0
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Class: Path traversal

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: nitr0us
Download: 🔍

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Nessus ID: 10297
Nessus Name: Web Server Directory Traversal Arbitrary File Access
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OpenVAS ID: 100887
OpenVAS Name: Yaws URI Directory Traversal Vulnerability
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Threat Intelligenceinfo

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Recommended: no mitigation known
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11/01/2010 🔍
11/01/2010 +0 days 🔍
11/01/2010 +0 days 🔍
11/01/2010 +0 days 🔍
11/01/2010 +0 days 🔍
11/04/2010 +2 days 🔍
11/04/2010 +0 days 🔍
11/04/2010 +0 days 🔍
11/21/2010 +17 days 🔍
03/19/2015 +1579 days 🔍
09/28/2021 +2385 days 🔍


Advisory: xforce.iss.net
Researcher: nitr0us
Status: Confirmed

CVE: CVE-2010-4181 (🔍)
X-Force: 62917
Vulnerability Center: 28299 - Yaws 1.89 Remote Directory Traversal Vulnerability via a Crafted URI, Medium
SecurityFocus: 44564 - Yaws URI Directory Traversal Vulnerability
Secunia: 42066
OSVDB: 68962 - Yaws URI Traversal Arbitrary File Access

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


Created: 03/19/2015 02:37 PM
Updated: 09/28/2021 11:51 AM
Changes: 03/19/2015 02:37 PM (63), 07/15/2017 04:49 PM (15), 09/28/2021 11:43 AM (3), 09/28/2021 11:51 AM (1)
Complete: 🔍
Cache ID: 3:32A:40


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