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PS4 Jailbreaking       Thread starter PSXHAX       Start date Oct 14, 2021 at 1:12 AM       18,783       33      
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As testing the previous Use-After-Free vulnerability (CVE-2021-1879) didn't favor the PlayStation 4 Scene, developer @Al Azif on Twitter retweeted another Use-After-Free vulnerability (CVE-2021-30858) by Anonymous via maddiestone that @Nazky on Twitter added to Github to try with PS4 WebKit revisions up to the most recent PS4 Firmware 9.00 in hopes of another userland entry point for Future PS4 Jailbreaking or improving the current PS4JB2 jailbreak exploit's stability. :geek:
Code:
THIS SITE IS A TEST FOR THE WEBKIT VULNERABILITY FOR THE PS4
CLICK OK
IF YOU DON'T SEE ANY 'API PATCHED' ERROR OR 'MEMORY ERROR'
ALERT OR ANY ERROR ALERT THAT'S MEAN IT'S NOT PATCH
Proof-of-Concept code of CVE-2021-30858 via maddiestone (Google Security Researcher):
Code:
var fontFace1 = new FontFace("font1", "", {});
var fontFaceSet = new FontFaceSet([fontFace1]);
fontFace1.family = "font2";

šŸ» Cheers to FxckThePolice for the heads-up on this earlier, below are some Tweet highlights and a screenshot thanks to M4rra_ on Twitter with many test results on various firmware versions added to the spoiler... however, @CTurt's $10K PlayStation Bug Bounty on HackerOne.com this past August remains a mystery as CTurtE has yet to elaborate and as usual it's :alert: not advisable :alert: to update your PS4 console:


Spoiler
PS4 WebKit Exploit Test for Use-After-Free (CVE-2021-30858) Vulnerability.jpg
 

Comments

Rafacutali

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What I've understood from all of this new happening in scene:

1) it's just a vulnerability not actually a WebKit exploit, someone need to turn this into exploit (possibility is 50/50).
2) even is someone was able to turn this into an actual WebKit exploit we still kernel exploit to make it to JB for firmware 8.xx.
 

stripnwild

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Great news!! But I definitely have no more room for storage... I'm looking into getting another 8TB ext HD (10 TB are too expensive)

A Seagate Expansion 8TB Desktop External Hard Drive USB 3.0 (STEB8000100) is about $252 CDN off amazon. Wonder if there is cheaper options hmmmmm - any suggestions for peeps north of the boarder?
 

mrcordas

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I have a huge thanks for the scene. although I've played the ones I most wanted The Last Part II and Red Dead Redemption 2 with the exploits, I know and like I do, it's part of a hacker and developer to have the pleasure of breaking the system , in addition to helping many others. :)
 
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