Dead Ends, Red Herrings, and Failures In Our Time

On the good days in security research, you get to channel equal parts Archimedes and Ric Ocasek in your successes. The pieces all come together as expected, the hunches turn into reality, everything just works.  And you should, of course, celebrate those moments of eureka and magic that went into your discovery, since your newest exploit is often your favorite exploit.  Though there's the rub -- your favorite exploit may forever be the one that you haven't found yet.  The perennial next one.

But this post isn't about successes in security research; it's about the failures.  If you're lucky, failure comes quickly.  A guess or a "what about..." falls apart and is disproven in minutes and not hours (or longer).  Plus every failure is an opportunity to use what you've learned about an application or a protocol or whatever in the future.  The work that goes into ten dead ends from poring over source code or RFCs can lead to a much better understanding of the overall system.  And those failures might lead you to something that you otherwise wouldn't have found or wouldn't have thought about.  Something real.  But not today.

Today we'll be looking at some ColdFusion vulnerability research that was interesting and promising at first look, but ultimately wasn't exploitable in the way I had hoped.  

RCE via ColdFusion ARchive (CAR) Deployment: One Example of an Authenticated Attack Path in CFAdmin (CVE-2025-61808)

Introduction

In this post we'll be looking at one way that an authenticated user with only ColdFusion Administration (CFAdmin) access can achieve remote code execution; this attack scenario could be used to model a rogue CFAdmin user without full server-level access, or an external attacker who is able to obtain unauthorized access to CFAdmin and then bootstrap further escalation and access.

The CFAdmin web interface introduces a large attack surface to ColdFusion environments.  That shouldn’t be a surprise since it adds a substantial default codebase intended to provide hooks into sensitive functionality.  When performing a threat model it could be perfectly reasonable to equate a CFAdmin compromise with a full system compromise.   In many organizations, the users with CFAdmin access may also be platform system administrators – with full, direct access to the underlying operating system.  If that's the case, a malicious CFAdmin user is equivalent to a malicious system administrator, and you’re cooked either way.  

But with that said, Adobe has extended considerable effort to protect and secure CFAdmin.  From monthly security patches, to webserver connectors and connector updates, to fixing other authenticated CFAdmin exploit paths – CFAdmin has become more secure over time.  And in some environments, CFAdmin access versus full platform access are distinct access roles, prompting organizations to care about all authenticated CFAdmin exploitation vectors.