Breaking Extreme Networks WingOS: How to Own Millions of Devices Running on Aircrafts, Government, Smart Cities and More
On Sunday, August 12th at 11am PT, I will give a talk at DEF CON 26 explaining how several critical vulnerabilities were found in the embedded operating system WingOS. The talk is entitled, “BreakingExtreme Networks WingOS: How to Own Millions of Devices Running on Aircrafts,Government, Smart Cities and More.” The Wing operating system was originally created by Motorola and nowadays Extreme Networks maintains it. WingOS is running in Motorola, Zebra and Extreme Networks access points and controllers. It is mainly used for WLAN networks. This research…
Are You Trading Stocks Securely?
Exposing Security Flaws in Trading Technologies. The days of open outcry on trading floors of the NYSE, NASDAQ, and other stock exchanges around the globe are gone. With the advent of electronic trading platforms and networks, the exchange of financial securities now is easier and faster than ever; but this comes with inherent risks.
Are You Trading Stocks Securely? Exposing Security Flaws in Trading Technologies
This blog post contains a small portion of the entire analysis. Please refer to the white paper. Disclaimer Most of the testing was performed using paper money (demo accounts) provided online by the brokerage houses. Only a few accounts were funded with real money for testing purposes. In the case of commercial platforms, the free trials provided by the brokers were used. Only end-user applications and their direct servers were analyzed. Other backend protocols and related technologies used in exchanges and financial institutions were not tested. This…
Android (AOSP) User Dictionary Content Provider Authorization Bypass
Android Open Source Project (AOSP) vulnerability discovered, where a malicious application without any permission could exploit access to the user personal dictionary.
Discovering and Exploiting a Vulnerability in Android’s Personal Dictionary (CVE-2018-9375)
I was auditing an Android smartphone, and all installed applications were in scope. My preferred approach, when time permits, is to manually inspect as much code as I can. This is how I found a subtle vulnerability that allowed me to interact with a content provider that was supposed to be protected in recent versions of Android: the user’s personal dictionary, which stores the spelling for non-standard words that the user wants to keep. While in theory access to the user’s personal dictionary should be only granted to privileged accounts,…
Secure Design Remains Critical
From time to time, a technically astute person challenges me around some area of secure design. Not too long ago, a distinguished engineer opined that “Threat modeling doesn’t do anything.” A CTO asked why there was any need for security architects, arguing, “We pay for static analysis. That should fix our secure development problems.” I’m not making these comments up. The people who made them are not clueless idiots, but rather, very bright individuals. These are worthy questions. If we, security architects (that is, those of us trying to create…
HooToo TripMate Routers are Cute But Insecure
It has been a while since I published something about a really broken router. To be honest, it has been a while since I even looked at a router, but let me fix that with this blog post.
HooToo Security Advisory
HT-TM05 is vulnerable to unauthenticated remote code execution in the /sysfirm.csp CGI endpoint, which allows an attacker to upload an arbitrary shell script that will be executed with root privileges on the device.
Robots Want Bitcoins too!
Ransomware attacks have boomed during the last few years, becoming a preferred method for cybercriminals to get monetary profit by encrypting victim information and requiring a ransom to get the information back. The primary ransomware target has always been information. When a victim has no backup of that information, he panics, forced to pay for its return.
Security Theater and the Watch Effect in Third-party Assessments
Before the facts were in, nearly every journalist and salesperson in infosec was thinking about how to squeeze lemonade from the Equifax breach. Let’s be honest – it was and is a big breach. There are lessons to be learned, but people seemed to have the answers before the facts were available. It takes time to dissect these situations and early speculation is often wrong. Efforts at attribution and methods take months to understand. So, it’s important to not buy into the hysteria and, instead, seek to gain a clear vision…