Vesta Admin Takeover - Exploiting reduced seed entropy in bash $RANDOM - Adrian Tiron

Описание: "Vesta CP Admin Takeover - Exploiting reduced seed entropy in bash $RANDOM" - Adrian Tiron

Vesta is a lightweight, web-based control panel that simplifies Linux server management, appealing to users seeking an intuitive alternative to traditional platforms like cPanel and Plesk. This presentation will examine a critical flaw in Vesta: an admin takeover exploit resulting from reduced seed entropy in the Bash $RANDOM variable. By transforming what was once a theoretical attack into a practical one, we successfully reduced the brute force domain of the seed by over 98%. This allows attackers to generate predictable random values, compromising the security of passwords and tokens. We will discuss the implications of this vulnerability and highlight best practices for enhancing server security in real-world applications.

SPEAKER BIO

Adrian Tiron is a Co-Founder & Principal Pentester/Red Teamer at FORTBRIDGE with 20 years of experience in cybersecurity. He has a proven track record of success working with top companies in the UK, US, and Europe. As a dedicated researcher and blog author, Adrian has uncovered multiple critical vulnerabilities in open-source and commercial software, contributing significantly to improving online security.

This talk was presented at the OWASP London Chapter Meetup on February 26, 2026 kindly hosted by ‪@CivoCloud‬ Tech Junction and kindly sponsored by ‪@Curity‬ . An additional raffle prize was sponsored by ‪@FORTBRIDGE‬

#owasplondon #owasp #pentesting #bugbountytips