These elements are often not subject to the same input validation, output encoding, and other content filtering and checking routines.Īn adversary embeds malicious scripts in content that will be served to web browsers. This often involves elements that are not expected to host scripts such as image tags (), or the addition of event attibutes such as onload and onmouseover. To launch a successful Stored XSS attack, an adversary looks for places where stored input data is used in the generation of a response. This response is subsequently sent to the victim and the malicious script is executed by the victim's browser. A victim is then convinced to use the web application in a way that creates a response that includes the malicious script. Initially presented by an adversary to the vulnerable web application, the malicious script is incorrectly considered valid input and is not properly encoded by the web application. This type of attack is a form of Cross-site Scripting (XSS) where a malicious script is persistenly "stored" within the data storage of a vulnerable web application. These elements are often not subject to the same input validation, output encoding, and other content filtering and checking routines. To launch a successful Reflected XSS attack, an adversary looks for places where user-input is used directly in the generation of a response. In processing the subsequent request, the vulnerable web application incorrectly considers the malicious script as valid input and uses it to creates a reposnse that is then sent back to the victim. The most common method of this is through a phishing email where the adversary embeds the malicious script with a URL that the victim then clicks on. The process starts with an adversary delivering a malicious script to a victim and convincing the victim to send the script to the vulnerable web application. This type of attack is a form of Cross-Site Scripting (XSS) where a malicious script is "reflected" off a vulnerable web application and then executed by a victim's browser.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |