Firefox 30.0b Crashes, EMET 4.1 to blame?
Howdy all.
I've relatively recently (past few months) started using Microsoft EMET (https://support.microsoft.com/kb/2458544) to provide extra security for my web browsing. For the most part it works fine with Firefox, but about once or twice a day Firefox will crash, and the errors make it clear that EMET is to blame.
The Windows Event Viewer shows that the plugin container is crashing (see below for a typical entry) on occasion, while my Mozilla crash reports indicate that various parts of FF are crashing after trying to read memory that they shouldn't.
Anecdotally, the crashes seem more common when I load websites that use Flash, though I haven't tested directly to know if this is actually the case or not.
So, my question is if anyone knows what EMET mitigations are known to be FF safe and if there's any hope for having the full suite play nice with the browser.
Typical Windows Event Error:
Faulting application name: plugin-container.exe, version: 30.0.0.5241, time stamp: 0x536c0e03
Faulting module name: mozalloc.dll, version: 30.0.0.5241, time stamp: 0x536bdea6
Exception code: 0x80000003
Fault offset: 0x0000141b
Faulting process id: 0xef4
Faulting application start time: 0x01cf706cd123e963
Faulting application path: C:\Program Files (x86)\Mozilla Firefox\plugin-container.exe
Faulting module path: C:\Program Files (x86)\Mozilla Firefox\mozalloc.dll
Report Id: ce00c077-dc7d-11e3-8377-f46d0409e237
Faulting package full name:
Faulting package-relative application ID:
The last five crash reports are:
bp-6ecba95e-2125-4ead-8aac-297452140515
bp-d48e1d3c-5d1b-47be-92e8-b0e332140515
bp-b9d0c081-2a20-4056-96c9-7763e2140514
bp-5005fda2-cab3-4939-8d8a-993be2140514
bp-b975d529-992d-45f0-823f-ddc182140513
Gewysig op
All Replies (2)
Try [/questions/993163] Firefox 28 with EMET 4.1
Thanks for the reply.
However, of the two pieces of advice in that thread one, "Disable EAF mitigation on plugin-container.exe", doesn't work, and the other ("Disable all protection for FF but SEHOP and NUL Page Prealloc") would get rid of most of the security EMET provides.
If, ultimately, it turns out that EMET simply doesn't play nice with FF then alright, but it's just a shame, since it provides a nice extra layer of security against attacks, which seems especially important nowadays.