Window Snyder
Mike Shaver and I just finished presenting “Building and Breaking the Browser”at Blackhat today in Las Vegas. We discussed the methods and tools that Mozilla uses to secure the Firefox browser. These tools include a fuzzer for Javascript, which has … Continue reading
Window Snyder
I’m heading to Las Vegas tomorrow for the Black Hat Briefings. If you’re in town you can catch me speaking on Thursday morning on Building and Breaking the Browser. You can also catch up with me Wednesday afternoon on the … Continue reading
Window Snyder
We’ve just released Firefox 2.0.0.6 which contains a security patch to mitigate the issue described here. The patch enables percent-encoding for spaces and double-quotes in URIs handed off to external programs. This reduces the risk of malicious data being passed … Continue reading
Window Snyder
Issue We are currently investigating an issue on Windows XP, where some urls for “web” protocols that contain %00 launch the wrong handler and appear to be able to launch local programs, with limited argument passing. Impact The impact to … Continue reading
Window Snyder
On July 10th, I posted about a security issue in URL protocol handling on Windows. In the previous example, Internet Explorer was the entry point and Firefox was the application receiving the bad data. Over the weekend, we learned about … Continue reading
Window Snyder
If you are a security geek in the bay area, find your way to O’Niell’s on 3rd and King Street in San Francisco at 7pm to meet up at BaySec. I’ll be there to celebrate shipping Firefox 2.0.0.5. I may … Continue reading
Window Snyder
Firefox 2.0.0.5 is now available and there is a fix for the URL protocol handling issue described here. We warned that other Windows applications may be vulnerable to this Internet Explorer issue, and on Sunday Nate Mcfeters, Billy Rios, and … Continue reading
Window Snyder
Today security firm Secunia released an advisory on a security issue found (apparently) simultaneously and independently by Greg MacManus and Billy Rios based on a previously reported issue in Safari found by Thor Larholm. Any Windows application that calls a … Continue reading
Window Snyder
Since all software has bugs, it’s more important to consider how long it takes to get a fix out when a security issue is discovered than it is to count bugs. Number of vulnerabilities identified is a function of how … Continue reading
Window Snyder
The bugs Michael Zalewski posted to full-disclosure yesterday are getting some attention in the press. The information below is intended to provide some clarity on the severity of these issues and how they impact users. Bug 382686 allows the attacker … Continue reading