Asp temporary file source code disclosure vulnerability

User posted Thanks for the link that was helpful! One last question: Who should I contact to remediate this issue? Sunday, January 16, PM. Thanks again! Monday, January 17, AM. User posted I guess I'm a bit confused. Monday, January 17, PM. Tuesday, January 18, PM. Not too readable. An attacker can easily circumvent the URL sensitive values that are passed in hashed format. They can employee numerous conversion tools for UTF formats as in the following: However, the sensitive data was encoded in UTF-8 format.

In fact, this URL sent the user name and password across the network and if you manage to derermine the encoding sache somehow then it would reveal the user name is Ajay and the password is phantom. So encoding of obfuscation tactics makes it harder to recognize but is not the ultimate solution to protect data. A developer might also use their own custom scheme to try to protect the data. The important point is that we should be aware of what the data is and how it is being consumed.

Final Word There are many types of information disclosure and utilized by applications in various forms. Hence, it is difficult to determine which information is useful by the attacker. It is mandatory to handle information disclosure related issues meticulously because if your application reveals enough information, an attacker has an advantage to use against the application, system or even another program.

In this paper, we have been able to get an understanding of various types of vulnerabilities in an ASP. NET pages in the form of comments, view-state and error messages. In the forthcoming articles of this series, we shall resume our voyage by covering another interesting vulnerability in an ASP.

NET pages through which sensitive information could be disclosed. View All. Ajay Yadav Updated date Nov 06, Reconnaissance typically categorizes the banner grabbing in the following tactics: Recognize Web Server and Version: the website is hosted on a web server, such as IIS, Apache and Tomcat.

Here, we can identify that the target machine is deployed on the internet via IIS web server. As in the aforesaid output, the website xyz. Depending on the source code, database connection strings, username and passwords, the internal workings and business logic of application might be revealed.

With such information, an attacker can mount the following types of attacks: Access the database or other data resources. Depending on the privileges of the account obtained from the source code, it may be possible to read, update or delete arbitrary data from the database. Gain access to password protected administrative mechanisms such as dashboards, management consoles and admin panels, hence gaining full control of the application.

Develop further attacks by investigating the source code for input validation errors and logic vulnerabilities. Actions To Take. Confirm exactly what aspects of the source code are actually disclosed; due to the limitations of these types of vulnerability, it might not be possible to confirm this in all instances. Substring 0, sBasePath. AddHeader "content-disposition", String. This code may lead to Directory Traversal vulnerability and information disclosure vulnerability, which can reveal sensitive data that may lead to further attacks.

MapPath HttpUtility. UrlEncode functions. MapPath functions. RQ "file" ; if File. Match file. ReadAllBytes file ; Response. Write buffer, 0, buffer. Length ; Response.