Vulnerabilities > CVE-2016-6601 - Path Traversal vulnerability in Zohocorp Webnms Framework 5.2

047910
CVSS 5.0 - MEDIUM
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
NONE
Availability impact
NONE
network
low complexity
zohocorp
CWE-22
exploit available
metasploit

Summary

Directory traversal vulnerability in the file download functionality in ZOHO WebNMS Framework 5.2 and 5.2 SP1 allows remote attackers to read arbitrary files via a .. (dot dot) in the fileName parameter to servlets/FetchFile.

Vulnerable Configurations

Part Description Count
Application
Zohocorp
2

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Relative Path Traversal
    An attacker exploits a weakness in input validation on the target by supplying a specially constructed path utilizing dot and slash characters for the purpose of obtaining access to arbitrary files or resources. An attacker modifies a known path on the target in order to reach material that is not available through intended channels. These attacks normally involve adding additional path separators (/ or \) and/or dots (.), or encodings thereof, in various combinations in order to reach parent directories or entirely separate trees of the target's directory structure.
  • Directory Traversal
    An attacker with access to file system resources, either directly or via application logic, will use various file path specification or navigation mechanisms such as ".." in path strings and absolute paths to extend their range of access to inappropriate areas of the file system. The attacker attempts to either explore the file system for recon purposes or access directories and files that are intended to be restricted from their access. Exploring the file system can be achieved through constructing paths presented to directory listing programs, such as "ls" and 'dir', or through specially crafted programs that attempt to explore the file system. The attacker engaging in this type of activity is searching for information that can be used later in a more exploitive attack. Access to restricted directories or files can be achieved through modification of path references utilized by system applications.
  • File System Function Injection, Content Based
    An attack of this type exploits the host's trust in executing remote content including binary files. The files are poisoned with a malicious payload (targeting the file systems accessible by the target software) by the attacker and may be passed through standard channels such as via email, and standard web content like PDF and multimedia files. The attacker exploits known vulnerabilities or handling routines in the target processes. Vulnerabilities of this type have been found in a wide variety of commercial applications from Microsoft Office to Adobe Acrobat and Apple Safari web browser. When the attacker knows the standard handling routines and can identify vulnerabilities and entry points they can be exploited by otherwise seemingly normal content. Once the attack is executed, the attackers' program can access relative directories such as C:\Program Files or other standard system directories to launch further attacks. In a worst case scenario, these programs are combined with other propagation logic and work as a virus.
  • Using Slashes and URL Encoding Combined to Bypass Validation Logic
    This attack targets the encoding of the URL combined with the encoding of the slash characters. An attacker can take advantage of the multiple way of encoding an URL and abuse the interpretation of the URL. An URL may contain special character that need special syntax handling in order to be interpreted. Special characters are represented using a percentage character followed by two digits representing the octet code of the original character (%HEX-CODE). For instance US-ASCII space character would be represented with %20. This is often referred as escaped ending or percent-encoding. Since the server decodes the URL from the requests, it may restrict the access to some URL paths by validating and filtering out the URL requests it received. An attacker will try to craft an URL with a sequence of special characters which once interpreted by the server will be equivalent to a forbidden URL. It can be difficult to protect against this attack since the URL can contain other format of encoding such as UTF-8 encoding, Unicode-encoding, etc.
  • Manipulating Input to File System Calls
    An attacker manipulates inputs to the target software which the target software passes to file system calls in the OS. The goal is to gain access to, and perhaps modify, areas of the file system that the target software did not intend to be accessible.

Exploit-Db

descriptionWebNMS Framework Server 5.2 / 5.2 SP1 - Multiple Vulnerabilities. CVE-2016-6600,CVE-2016-6601,CVE-2016-6602,CVE-2016-6603. Webapps exploit for JSP platform
fileexploits/jsp/webapps/40229.txt
idEDB-ID:40229
last seen2016-08-11
modified2016-08-10
platformjsp
port
published2016-08-10
reporterPedro Ribeiro
titleWebNMS Framework Server 5.2 / 5.2 SP1 - Multiple Vulnerabilities
typewebapps

Metasploit

Packetstorm

data sourcehttps://packetstormsecurity.com/files/download/138244/webnms-5.2-sp1-pwn.txt
idPACKETSTORM:138244
last seen2016-12-05
published2016-08-08
reporterPedro Ribeiro
sourcehttps://packetstormsecurity.com/files/138244/WebNMS-Framework-5.2-SP1-Traversal-Weak-Obfuscation-User-Impersonation.html
titleWebNMS Framework 5.2 SP1 Traversal / Weak Obfuscation / User Impersonation

Seebug

  • bulletinFamilyexploit
    description### Summary WebNMS is an industry-leading used to build network management applications architecture. The File Download feature does not require login you can download any text, non-binary file. ### Vulnerability details FetchFile to allow not logged in download the file, but only the text content of the file can be downloaded correctly. Submit the following Get request: GET /servlets/FetchFile? fileName=../../../etc/shadow Note: Get the requested file name cannot contain : ? * | " < > And other symbols. The software has a Windows version, the Windows platform can only download the software installation directory where the drive letter in the file because you can not use colon in. Download the official Windows trial version software testing by: http://www.webnms.com/webnms/14107380/WebNMS_Framework_5_STD_Windows.exe ### Other information * Vulnerability discovered by: Pedro Ribeiro * CVE number: CVE-2016-6601 * Affect version:<= 5. 2SP1
    idSSV:92359
    last seen2017-11-19
    modified2016-08-30
    published2016-08-30
    reporterHarnnless
    titleWebNMS Framework 5.2SP1 Text File Download
  • bulletinFamilyexploit
    description### Summary WebNMS is an industry-leading used to build network management applications architecture. Storage of the password using a vulnerable confused with the encryption algorithm, combined with File Download vulnerability to obtain the password in plain text. ### Vulnerability details ./ conf/securitydbData.xml the file is stored in the login user name and password. And the password obfuscation algorithm can be easily decrypted. Use CVE-2016-6601 File Download vulnerability to download files: GET /servlets/FetchFile?fileName=conf/securitydbData.xml The default content in the root user's password decrypted for the public. The decryption algorithm in the poc code verification. Download the official Windows trial version software testing by: http://www.webnms.com/webnms/14107380/WebNMS_Framework_5_STD_Windows.exe ### Other information * Vulnerability discovered by: Pedro Ribeiro * CVE number: CVE-2016-6602 * Affect version:<= 5. 2SP1
    idSSV:92360
    last seen2017-11-19
    modified2016-08-30
    published2016-08-30
    reporterHarnnless
    titleWebNMS Framework 5.2SP1 Information Disclosure