This tweet talks about the discovery of a Reflected Cross-Site Scripting (XSS) vulnerability on the MOD UK Police website that manages to bypass their Web Application Firewall (WAF). Although the tweet does not provide the specific payload or WAF vendor, it highlights a successful bypass of the WAF protection mechanisms on a government site, which is significant since such sites typically have robust security defenses. Reflected XSS occurs when user input is immediately reflected back in the web response without proper sanitization, allowing attackers to inject malicious scripts. The bypass implies that the WAF rules or signatures could be insufficient or improperly configured, allowing the malicious payload to pass through. The tweet is valuable for bug bounty enthusiasts and security researchers as it showcases an advanced bypass in a high security environment. Findings like this emphasize the need for continuous testing and updating of WAF configurations to keep up with evolving attack techniques.
For more insights, check out the original tweet here: https://twitter.com/bountywriteups/status/1966837793029575132