webProeasy

Medium 3 - JSON Injection XSS

web-kids20

XSS challenge from the sibearsxss series. Input must be valid JSON (validated via JSON.parse), then inserted into a JavaScript string inside single quotes.

xss json_injection js_string_context json_parse sibearsxss

json_injection_xssjs_string_breakout

$ ls tags/ techniques/

xss json_injection js_string_context json_parse sibearsxss

json_injection_xssjs_string_breakout

Analysis

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

$ python3 exploit.py --target 192.168.1.1 --port 8080
[*] Connecting to target...
[+] Shell obtained!

Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

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