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

Analysis of sys_dynlib_prepare_dlclose PS4 kernel heap overflow (by CTurt with the help of qwertyoruiop)

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

Public release by kR105

Patched

Yes in 2.00 FW

BadIntegerReturn (badIRET)

Analysis

Hacking the PS4, part 3 - Kernel exploitation (by CTurt)

Source

CVE-2014-9322
Public binary

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