An anonymous hacker disclosed technical details and proof-of-concept exploit code for a critical zero-day remote code execution flaw in vBulletin.
vBulletinis one of the most popular forum software, for this reason, the disclosure of a zero-day flaw affecting it could impact a wide audience.
More than 100,000 websites online run on top of vBulletin.
An anonymous hacker disclosed technical details and proof-of-concept exploit code for a critical zero-day remote code execution flaw in vBulletin. The bad news is that the vulnerability in the popular software is still unpatched.
The vulnerability could be exploited remotely by an unauthenticated attacker. The PoC exploit published by the hacker works on vBulletin versions 5.0.0 till the latest 5.5.4.
The zero-day flaw in the forum software resides in the way an internal widget file of the forum software package accepts configurations via the URL parameters. The expert discovered that the package fails to validate the parameters, an attacker could exploit it to inject commands and remotely execute code on the vulnerable install.
Let’s hope that the maintainers of the vBulletin project will address the vulnerability as soon as possible before threat actors will start to exploit the PoC code in attacks in the wild.
Pierluigi Paganini is member of the ENISA (European Union Agency for Network and Information Security) Threat Landscape Stakeholder Group and Cyber G7 Group, he is also a Security Evangelist, Security Analyst and Freelance Writer.
Editor-in-Chief at "Cyber Defense Magazine", Pierluigi is a cyber security expert with over 20 years experience in the field, he is Certified Ethical Hacker at EC Council in London. The passion for writing and a strong belief that security is founded on sharing and awareness led Pierluigi to find the security blog "Security Affairs" recently named a Top National Security Resource for US.
Pierluigi is a member of the "The Hacker News" team and he is a writer for some major publications in the field such as Cyber War Zone, ICTTF, Infosec Island, Infosec Institute, The Hacker News Magazine and for many other Security magazines.
Author of the Books "The Deep Dark Web" and “Digital Virtual Currency and Bitcoin”.