Hello Readers, todays we will discuss about the Exposed Session Token Vulnerability and the Causes of such attacks. Lets discuss about the same in detail .

Overview

Exposed Session Tokens is an attack that grants an attacker to seize a valid user session. In practice some application dont create a New Session ID during the Authentication process which allow to use the existing Session ID. Therby the attack consists of acquire a valid session ID and causing a user to authenticate himself with that session ID. Hence Hijacking of User Validated session takes place that is Exposed Session Token occurs within the Application

Cause

The root cause of Exposing Session Token Attacks can be because of

• Imperfection in the generation of Session Token or
• Imperation in managing and controlling the Life cycle of Token Generation.

Lets see the details about it in details under the following heads:

Imperfection in Session Token Generation

• Displaying some structure which allows an attacker to understand their function and means of Generation.
• Mainly component involved like Username, E-mail Address and Client’s IP Address.
• Token generated by a Created using a alteration of the user’s username or other information related to those user.
• Foreseeable tokens either involve some chronological sequence or arise from three kind which are

1. Concealed sequences
2. Time dependency
3. Weak random Number generation

Imperfection in the Managing of session tokens throughout their life-cycle

• Revealing of Tokens on Network
• Most of the applications chosen to use HTTPS to secure the important credentials of the respective user who tries to Login but then turn back for the existing user session.
• Some use HTTP for pre authenticated areas of the site, such as the site’s front page, but transfer its control to HTTPS from the index page(login Page) onward.
• Revealing of session tokens coming into court in system logs
• Vulnerable session termination: As involved in Login perspective, some applications do not provide effective logout functionality that can be because of :

1. A log-out function is not implemented in the Application
2. This method does not cease to be invalidating the session
3. If a user clicks Logout then this is not properly transmitted to the server at all, and hence the server performs no action .

• Client Exposure to Token Hijacking: Such may happen like

1. Any Attacker Identify CSS vulnerabilities within the application and exploited to capture the session tokens of other users
2. If some application created the session token in order to communicated the Invalidated authentication then it might be possible that attacker can obtain a token and perform a login.