--- title: HTB: Facts | daily.dev description: A detailed walkthrough of the HackTheBox 'Facts' machine, a Linux box running Camaleon CMS 2.9.0 on Ruby on Rails. The attack chain involves exploiting... canonical: https://daily.dev/posts/htb-facts-09nlopse0 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: HTB: Facts | daily.dev og:description: A detailed walkthrough of the HackTheBox 'Facts' machine, a Linux box running Camaleon CMS 2.9.0 on Ruby on Rails. The attack chain involves exploiting... og:url: https://daily.dev/posts/htb-facts-09nlopse0 og:image: https://api.daily.dev/og/posts/09nlOpSe0.png og:image:alt: HTB: Facts og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # HTB: Facts **[0xdf hacks stuff](https://daily.dev/sources/0xdf)** · 37 min read · 0 upvotes · 0 comments ## Summary A detailed walkthrough of the HackTheBox 'Facts' machine, a Linux box running Camaleon CMS 2.9.0 on Ruby on Rails. The attack chain involves exploiting CVE-2025-2304, a mass assignment vulnerability in Camaleon's password update endpoint, to escalate a regular user account to administrator. Admin credentials are then used to authenticate to a local MinIO S3 service, where an encrypted SSH private key is retrieved from a bucket resembling a home directory. The passphrase is cracked with john using rockyou.txt. For root privilege escalation, a sudo rule allows running 'facter' (Puppet's Ruby-based system inventory tool) as any user, which can load arbitrary Ruby code from a custom facts directory. A 'Beyond Root' section covers an alternative foothold via a path traversal vulnerability in Camaleon's S3 uploader and decrypting Rails session cookies using a leaked master key. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [HTB: Barrier](https://daily.dev/posts/htb-barrier-5m5e3sa5g) · 0xdf hacks stuff · 0 upvotes · 0 comments - [HTB: Orion](https://daily.dev/posts/htb-orion-p1pnwvkbh) · 0xdf hacks stuff · 0 upvotes · 0 comments - [HTB — Strutted Writeup: Linux Machine](https://daily.dev/posts/htb-strutted-writeup-linux-machine-x6cn8azui) · InfoSec Write-ups · 1 upvotes · 0 comments - [HTB: CodeTwo](https://daily.dev/posts/htb-codetwo-klj991bhn) · 0xdf hacks stuff · 2 upvotes · 0 comments - [HTB: Sorcery](https://daily.dev/posts/htb-sorcery-yhr9k53zj) · 0xdf hacks stuff · 0 upvotes · 0 comments --- Tags: [#security](https://daily.dev/tags/security), [#rails](https://daily.dev/tags/rails) [View this post on daily.dev](https://daily.dev/posts/htb-facts-09nlopse0) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"HTB: Facts","url":"https://daily.dev/posts/htb-facts-09nlopse0","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/htb-facts-09nlopse0"},"datePublished":"2026-06-06T15:03:09.813Z","dateModified":"2026-06-06T15:03:36.276Z","description":"A detailed walkthrough of the HackTheBox 'Facts' machine, a Linux box running Camaleon CMS 2.9.0 on Ruby on Rails. 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