Paper

Verified writeups for the Paper machine of Hack The Box

Paper

$ tldr WordPress draft view → Rocket.Chat bot → Polkit (CVE-2021-3560)

CVE / Bulletins: CVE-2021-3560 ↗

·	·
Operating system	Linux
Difficulty	Easy
Vector	Web
IP	10.10.11.143
Retirement date	2022-06-18
Skills	Information Leakage Abussing WordPress - Unauthenticated View Private/Draft Posts Abusing Rocket Chat Bot Polkit (CVE-2021-3560) [Privilege Escalation]

Writeups

Language	Author	Format	Link
🇪🇸 ES	S4vitar	Vídeo	Open
🇪🇸 ES	El Pingüino de Mario	Vídeo	Open
🇬🇧 EN	0xdf	Texto	Open
🇬🇧 EN	IppSec	Vídeo	Open

Skill resources

Curated documentation for each technique listed in the Skills column above. Sources: HackTricks, GTFOBins, PortSwigger, etc.

Skill	Source	Link
Information Leakage	HackTricks	Open
WordPress Exploitation	HackTricks	Open

Related skills worth mastering

Remote Code Execution (RCE)

If you liked this machine, try

• Blocky — Linux, Easy
• Brainfuck — Linux, Insane
• Admirer — Linux, Easy
• Haystack — Linux, Easy
• Apocalyst — Linux, Medium

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Last updated: 2026-07-13