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Recent Blog Posts

  • Exploiting the Jackson RCE: CVE-2017-7525
    Earlier this year, a vulnerability was discovered in the Jackson data-binding library, a library for Java that allows developers to easily serialize Java objects to JSON and vice versa, that allowed an attacker to exploit deserialization to achieve Remote Code Execution on the server. This vulnerability didn't seem to get…
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  • Breaking the NemucodAES Ransomware
    The Nemucod ransomware has been around, in various incarnations, for some time. Recently a new variant started spreading via email claiming to be from UPS. This new version changed how files are encrypted, clearly in an attempt to fix its prior issue of being able to decrypt files without paying…
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  • 30 Days of Brave
    Brave is a web browser available for multiple platforms that aims to provide additional security and privacy features - plus a novel monetization scheme for publishers. I gave it 30 days to see if it was worth using. I switched on all platforms I use to give it a fair…
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  • Confide, Screenshots, and Imaginary Threats
    Recently Vice published a story about a lawsuit against the makers of the 'secure' messaging application Confide. This isn't just a lawsuit, it's a class-action lawsuit and brought by Edelson PC - an amazingly successful (and sometimes hated1) law firm - this isn't a simple case. The complaint includes a…
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  • Shadow Brokers, Equation Group, Oh My…
    Yet again, a group known as The Shadow Brokers is in the news, with yet another leak from what is widely accepted as the NSA (Equation Group1 in APT terms). This release is, to many, the most important release of this leaked stolen material from the most elite and secretive…
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Recent Security Research

  • Exploiting the Jackson RCE: CVE-2017-7525
    Earlier this year, a vulnerability was discovered in the Jackson data-binding library, a library for Java that allows developers to easily serialize Java objects to JSON and vice versa, that allowed an attacker to exploit deserialization to achieve Remote Code Execution on the server. This vulnerability didn't seem to get…
    Continue reading »

  • Breaking the NemucodAES Ransomware
    The Nemucod ransomware has been around, in various incarnations, for some time. Recently a new variant started spreading via email claiming to be from UPS. This new version changed how files are encrypted, clearly in an attempt to fix its prior issue of being able to decrypt files without paying…
    Continue reading »

  • PL/SQL Developer: HTTP to Command Execution
    While looking into PL/SQL Developer - a very popular tool for working with Oracle databases, to see how it encrypts passwords I noticed something interesting. When testing Windows applications, I make it a habit to have Fiddler running, to see if there is any interesting traffic - and in this…
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  • PL/SQL Developer: Nonexistent Encryption
    (See here for another issue discovered during this research; Updates over HTTP & Command Execution.) PL/SQL Developer by Allround Automations has an option to store the user's logon history with passwords - the passwords are encrypted with a proprietary algorithm. At this point, you should know how this is going…
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  • Verizon Hum Leaking Credentials
    or, Christmas Infosec Insanity... A friend mentioned Hum by Verizon, a product that I hadn't heard of but quickly caught my attention - both from a "here's a privacy nightmare" perspective, and "I might actually use that" perspective. While looking at the site, I decided to take a look at…
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Projects

  • YAWAST – The YAWAST Antecedent Web Application Security Toolkit
  • libsodium-net – The .NET library for libsodium; a modern and easy-to-use crypto library.
  • ccsrch – Cross-platform credit card (PAN) search tool for security assessments.
  • Underhanded Crypto Contest – A competition to write or modify crypto code that appears to be secure, but actually does something evil.

Consulting & Services

I am available for certain consulting projects; especially in the areas of application security, cryptography, secure systems design, and application penetration testing. For more information, please contact me.

About Adam Caudill

Adam Caudill is a security consultant with over 15 years of experience in security and software development; with a focus on application security, secure communications, and cryptography. Active blogger, open source contributor, and advocate for user privacy and protection. His work has been cited by many media outlets and publications around the world, from CNN to Wired and countless others.