Whereas server-side attacks seek to compromise and breach the data and applications that are present on a server client-side attacks specifically target the software on the desktop itself. XSS attacks occur when an attacker uses a web application to send malicious code generally in the form of a browser side script to a different end user.
Mismatched resource mappings in the configuration.
Business logic for dynamic webpages for instance usually runs client side in a modern web application. It is just a normal virtual machine that we can use right here to do anything we want. This malicious snippet gets activated whenever a web page is loaded to work as per the perpetrators intent.
Cross-site scripting is one of the most frequent web application attacks. Just to convey this idea we will see the Metasploitable machine. Despite their advantages web applications do raise a number of security concerns stemming from improper coding.
Flaws that allow these attacks to succeed are quite widespread and occur anywhere a web application uses input from a user within the output it generates without validating or encoding it. Examples of service range from public services such as online gaming to sharing sensitive files inside a large organization. The Server-Side Includes attack allows the exploitation of a web application by injecting scripts in HTML pages or executing arbitrary codes remotely.
That is the content provided for users who are surfing the Web is generated by a software application running on a server. Server-Side Web Application Attacks As its name implies a server provides services to clients. Websites are hosted on web servers.
A Server Side Request Forgery SSRF vulnerability allows an attacker to change a parameter used on the web application to create or control requests from the vulnerable server. The most common form of SQLi occurs when an attacker enters malicious SQL code into a field on a web page and the server-side code submits it to the database without properly sanitizing it first. Connected to the back-end database running various applications.
Web servers are themselves computers running an operating system. However since injected fields are part of a web form they may be transmitted in the POST request along with legitimate fields on the page back to the server. The Unicode Superfluous decode attack.
Web pages are generated at the server and browsers present them at the client side. On the Internet a web server provides services that are implemented as web applications. In a computer security context server-side vulnerabilities or attacks refer to those that occur on a server computer system rather than on the client side or in between the two.
For example an attacker might exploit an SQL injection vulnerability in a web application in order to maliciously change or gain unauthorized access to data in the. The data is passed between client and server in the form of HTML pages through HTTP protocol. The web server fails to parse the URL properly.
There are client-side vulnerabilities and server-side vulnerabilities which lead to a web application attack. Server-side attacks work against a normal computer websites web servers people as long as we can ping them. Ultimately attacks against both web APIs and web apps essentially take the same approach and equal protection needs to be taken.
A successful SQLi attack can delete or change sensitive data or reveal it to the attacker. When investigating web application compromises investigators may not have access to the client side computer. Let us now look at types of attacks on web applications.
In addition many contemporary developers are including client-side processes in their application architecture and moving away from doing everything on the server side. It can be exploited through manipulation of SSI in use in the application or force its use through user input fields. Serious weaknesses or vulnerabilities allow criminals to gain direct and public access to databases in order to churn sensitive data this is known.
Both of these attacks are client side attacks. A SQL Injection would be an example of a server-side attack because the code that is injected is run on the SQL server. HtrJSP Java remote command execution etc.
Any vulnerability in the applications Database Operating system or in the network will lead to an attack on the web server.