InkDrop

hackadvisor

Task: Flask blogging platform with Pillow-based image thumbnail generation; Ghostscript processes EPS content regardless of file extension. Solution: Upload EPS payload with .jpg extension exploiting CVE-2018-16509 (-dSAFER bypass via failed restore) to achieve RCE and exfiltrate /root/flag.txt.

command_injection flask rce file_upload pillow nginx image_processing ghostscript postscript eps thumbnail_generation cve_2018_16509 safer_bypass

honeypot_flag_detectionghostscript_safer_bypass_via_failed_restoreeps_content_in_jpg_extension_bypassputdeviceprops_pipe_command_executiondynamic_path_discovery_for_exfiltrationpillow_eps_autodetection_abuse

$ ls tags/ techniques/

command_injection flask rce file_upload pillow nginx image_processing ghostscript postscript eps thumbnail_generation cve_2018_16509 safer_bypass

Analysis

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$ 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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