Top Browser Bugs: From Memory Crashes to Sneaky Save As Attacks

Memory safety bugs in Firefox 126, Firefox ESR 115.11, and Thunderbird 115.11 could lead to exploitable crashes.

Hot Take:

Looks like the cyber gremlins have been busy! From frame-busting iframes to sneaky ‘Save As’ shenanigans, it’s a wonder our browsers aren’t in therapy. Buckle up, folks, the cyber rollercoaster is in full swing!

Key Points:

  • Use-after-free vulnerability due to poorly timed garbage collection.
  • Timing attacks to identify active external protocol handlers.
  • Bypassing iframe restrictions with a crafty X-Frame-Options header.
  • Tricking ‘Save As’ functionality to bypass file extension restrictions on Windows 10.
  • Offscreen Canvas cross-origin tainting mishandled, violating same-origin policy.
  • Memory corruption via manipulated <input> tags leading to exploitable crashes.
  • Memory safety bugs in Firefox and Thunderbird potentially allowing arbitrary code execution.

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