This tweet provides a brief checklist for bug hunters focusing on security vulnerabilities and bypass techniques. The tweet highlights an advanced Server-Side Request Forgery (SSRF) vulnerability discovered in a production environment. SSRF vulnerabilities allow attackers to make unauthorized requests from a vulnerable server. A key challenge in exploiting SSRF is often a Web Application Firewall (WAF) that blocks malicious payloads. The bypass payload mentioned is "..;/", which is an interesting technique to evade WAF filters that may not properly parse or normalize such characters, allowing the attacker to bypass the WAF protections and exploit the SSRF vulnerability. The tweet emphasizes the importance of reporting critical vulnerabilities while reminding ethical hackers to take care of their well-being (such as by getting enough sleep). Although the WAF vendor is not specified, this technique is noteworthy for its simplicity and effectiveness in bypassing security controls. Bug hunters and security researchers should consider exploring similar encoding or path traversal tricks to bypass WAFs when testing SSRF vulnerabilities. Overall, the tweet serves as a quick tip and motivational reminder in the bug hunting community.
For more insights, check out the original tweet here: https://twitter.com/ott3rly/status/1958088680511332723. And don’t forget to follow @ott3rly for more exciting updates in the world of cybersecurity.