A relatively prevalent type of cross-site scripting (or XSS) attack is an iFrame injection. It is made up of one or more iFrame tags that have been injected into the content of a page or post and often downloads an executable software or performs other operations that compromise the machines of site users.
Because the attack makes use of a code-based vulnerability and a user’s trust, it is commonly employed in conjunction with social engineering. As a side aside, this attack is frequently misconstrued as a bug with no effect.
The risk factors are determined by the application’s business type. If the application company brand is well-known and has significant rivals, this issue can be exploited by malicious competitors/disgruntled employees/dissatisfied customers to cause the widespread dissemination of fraudulent messages to unwary consumers. Another danger factor is doing SEO injection in such a way that search engines scan and index constructed URLs with faked content.
Customers may be forced to switch to competitors’ products as a result of this. This might result in the monetary loss until the affected business appropriately rectifies the situation. Shares of publicly traded companies will collapse, resulting in uncontrollable losses in the millions.
Injection of Hypertext Markup Language (HTML) Examples
A probable attack scenario is shown below. Let us suppose that no output encoding is used in this scenario:
1- An attacker finds a weakness in injection and chooses to fake a login form.
2- The attacker creates a malicious link, complete with inserted HTML information, and delivers it to a user through email.
3- The visitor views the website because it is placed within a trusted domain.
4- The injected HTML by the attacker is rendered and given to the user, who is then prompted for a login and password.
5- The user provides a username and password, both of which are sent to the attacker’s server.
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