![]() They may thereby be able to trick your browser into misbehaving in ways that don’t merely cause it to crash, but instead cause it to carry out unauthorised operations. Now imagine that attackers can arrange a sequence of operations, for example with some cunningly-crafted JavaScript, causin external (untrusted) data to wind up in a memory block that is used after it is freed. That’s where a programmer hands back (frees) a temporary block of memory so the operating system can re-allocate it, after which the contents of that memory can no longer be trusted.īut then the programmer continues to use the data stored in that memory block, even though it could by now have been altered by another part of the program. You’ll see the phrase use-after-free several times. ![]() The red entries in the list below are the ones that should convince to to update sooner rather than later, assuming you haven’t chosen to give control over updates to Firefox itself: That’s the sort of bug that could allow a crook to infect your computer merely by getting you to click through to a website containing booby-trapped content, bypassing any dialog boxes to ask if you’re sure you want to download or run a file. The security patches include a number of critical updates to close potential remote code execution holes. There are numerous security fixes combined with some rather in-your-face visual changes.įor those who prefer their security patches quickly but their feature updates more slowly, Firefox 24.5.0 Extended Support Release is also available. Firefox 29 is out, in accordance with Mozilla’s regular Tuesday-based 42 day update cycle.
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