How Mozilla finds crash bugs
This Tuesday (2009-07-21), I’m organizing a crash bug triage day where anyone interested can help us classify the swamp of open crash bugs. Join us in #bugday on irc.mozilla.org if … Read more
milw0rm 9158 “stack overflow” crash not exploitable (CVE-2009-2479)
In the last few days, there have been several reports (including one via SANS) of a bug in Firefox related to handling of certain very long Unicode strings. While these … Read more
Critical JavaScript vulnerability in Firefox 3.5
Al Billings
Issue A bug discovered last week in Firefox 3.5’s Just-in-time (JIT) JavaScript compiler was disclosed publicly yesterday. It is a critical vulnerability that can be used to execute malicious code. … Read more
Shutting Down XSS with Content Security Policy
Al Billings
For several years, Cross-Site Scripting (XSS) attacks have plagued many of the web’s most popular sites and victimized their users. At Mozilla, we’ve been working for the last year on … Read more
Measure What Matters – The SEC Essentials
Johnathan Nightingale
People want to know that they are safe when they browse the web. There are important differences between browsers when it comes to security, and so it’s no surprise to … Read more
CanSecWest 2009 Pwn2Own Exploit and XSL Transform Vulnerability
Lucas Adamski
Issue The pwn2own bug that Nils discovered at CanSecWest 2009 and the XSLT vulnerability recently made public by Guido Landi (http://www.securityfocus.com/bid/34235) are both critical issues that can result in malicious … Read more
New CSS Grammar Fuzzer
Johnathan Nightingale
Mozilla’s Jesse Ruderman just blogged about a new CSS grammar fuzzer of his, to go along with the JS fuzzer we announced a while ago. Fuzzers are a tool that … Read more
Beware the Security Metric
Lucas Adamski
Security metrics are very difficult to do well, and easy to do poorly. For example, take a look at the recent Secunia “2008 Report” (http://secunia.com/gfx/Secunia2008Report.pdf). It tries to break down … Read more
MD5 Weaknesses Could Lead to Certificate Forgery
Johnathan Nightingale
Issue Researchers have recently found weaknesses in the MD5 hash algorithm, relied on by some SSL certificates. Using these weaknesses, an attacker could obtain fraudulent SSL certificates for websites they … Read more
The Importance of Good Metrics
Johnathan Nightingale
There has been some interest in the last few days about a recent report from a company called Bit9 about application vulnerabilities. While we’re always happy to see stories that … Read more
Leaving Mozilla
Window Snyder
I will be leaving Mozilla at the end of the year. I am sad to be leaving, but I am excited to go work on something I have always been … Read more
Malicious Firefox Plugin
Window Snyder
Issue A malicious piece of software masquerading as a legitimate and popular Firefox plugin is spreading. Trojan.PWS.ChromeInject.A collects a user’s passwords from banking and other sites and forwards them to … Read more