Use-after-free vulnerability in the CanonicalizeXPCOMParticipant function in Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 allows remote attackers to execute arbitrary code via a script that closes its own Service Worker within a nested sync event loop.
| Software | From | Fixed in |
|---|---|---|
| mozilla / firefox | - | 47.0.1.x |
| oracle / linux | 5.0 | 5.0.x |
| oracle / linux | 6 | 6.x |
| oracle / linux | 7 | 7.x |
| mozilla / firefox | 45.1.0 | 45.1.0.x |
| mozilla / firefox | 45.1.1 | 45.1.1.x |
| mozilla / firefox | 45.2.0 | 45.2.0.x |
| mozilla / firefox | 45.3.0 | 45.3.0.x |