This tweet highlights several important aspects of web application firewall (WAF) bypass and pentesting techniques. First, it mentions database detection through comments, version disclosures, and stacked queries, which are common techniques attackers use to gain information about the backend database. Such information can be critical for crafting successful injection attacks.
Next, the tweet notes the use of XSS WAF bypass techniques. Cross-site scripting (XSS) is a common vulnerability that many WAFs try to block. Bypassing WAF protections for XSS requires advanced methods to evade pattern matching and filtering rules.
Lastly, the tweet brings attention to second order SQL injection, a more sophisticated attack where malicious payloads stored in the database execute later in a different context, potentially bypassing some WAF rules that only check immediate inputs.
The tweet does not provide explicit payloads but reflects important penetration testing and WAF evasion strategies targeting multiple vulnerabilities like XSS and SQL injection. It underscores the complexity of securing web applications and the need for continuous research and testing to discover new bypass methods.
Check out the original tweet here: https://twitter.com/teainsec/status/1937972936033398801