Vulnerabilities
WebKit/Userland Exploits
Int32 bug
WebKit/536.26 exploit on System Firmware 1.760.000 and lower (patched in 2.000.000)
http://wololo.net/2014/10/24/webkit-exploit-confirmed-to-run-on-ps4-firmware-1-76/
CVE 2014-1303
WebKit/537.73 exploit on System Firmware 2.040.000 and lower (patched in 2.508.000)
https://github.com/Fire30/PS4-2014-1303-POC
FireKaku
WebKit/??? exploit on System Firmware 3.550.000 + 3.70 (Phat PS4 NOT PRO) and lower (patched in 4.000.000)
https://github.com/Fire30/PS4-3.55-Code-Execution-PoC
heap buffer overflow in butterfly access on uaf_target
WebKit/??? exploit on System Firmware 4.070.000 and lower (patched in 4.500.000)
https://rce.party/ps4 (mirror at https://gist.github.com/X41/36acd2a6939e4cebbecba45d35bf0d75)
Additional Information
On FW <= 1.76, you could map RWX memory from ROP by abusing the JiT functionality and the sys_jitshm_create and sys_jitshm_alias system calls. This however was fixed after 1.76, as WebKit has been split into two processes. One handles javascript compilation and the other handles other web page elements like image rendering and DOM. The second process will request JiT memory upon hitting JavaScript via IPC (Inter-Process Communication). Since we no longer have access to the process responsible for JiT, we can no longer (at least currently), map RWX memory for proper code execution.
Kernel Exploits
NamedObj Type Confusion (namedobj)
Analysis
Write-up of the < 4.06 kernel exploit
The Bug
Type confusion in the namedobj system once exploited can lead to an arbitrary free() allowing an attacker to craft a use-after-free situation to obtain code execution in ring0.
Patched
Yes in 4.06 FW
Dynamic Library Prepare Close (dlclose)
Analysis
The Bug
Integer overflow in the sys_dynlib_prepare_dlclose() system call can lead to a heap overflow causing memory corruption, allowing an attacker to obtain code execution in ring0.
Source
Patched
Yes in 2.00 FW
BadIntegerReturn (badIRET)
Analysis
Hacking the PS4, part 3 - Kernel exploitation (by CTurt)
Source
The Bug
Allows an attacker to corrupt the GS base address and obtain code execution in ring0 by abusing the IRET instruction.
Patched
Yes in 2.00 FW
Additional Information
It seems at some point after the 1.76 FW, ASLR (Address Space Layout Randomization) was enabled in the kernel. This means that to properly exploit the kernel to escalate privileges, an information disclosure vulnerability will most likely be needed to defeat ASLR and locate the kernel in memory.
First Steps
VidNow
A possible exploit has been found in VidNow App in the Playstation Store App .
PATCHED: Sony has hotfixed this exploit via content hashing the file while in transit.
UPDATE: Some have managed to reverse the hotfix but the method is not known - the PS4 checks the content
hash HTTP header from the HMAC header.
SnagFilms
A possible exploit has been found in the SnagFilms App in the Playstation Store App.
Arbitrary code execution in memory has been demonstrated, although so far the system will throw an exception in the programs memory before the payload finishes loading.
If you craft a small enough payload and/or a payload that load's without causing an exception in program memory you can most likely get code execution working.
http://i.imgur.com/5OrSFCa.jpg
| |||||||||||||||||||||||||||||||||||||||||||||
