[bounty] Facebook Account Takeovers and a vBulletin RCE

Is it possible to escalate a self-XSS into an account takeover? Perhaps, we take a look at some potential options by abusing single-sign on. Then we take a look at a few Facebook/Meta authentication issues, and a deserialization trick to increase the usable classes in PHP.

Links and vulnerability summaries for this episode are available at: https://dayzerosec.com/podcast/185.html

[00:00:00] Introduction

[00:00:21] Single-Sign On Gadgets: Escalate (Self-)XSS to Account Takeover

[00:11:11] Account takeover of Facebook/Oculus accounts due to First-Party access_token stealing

[00:14:00] DOM-XSS in Instant Games due to improper verification of supplied URLs

[00:18:55] Account Takeover in Canvas Apps served in Comet due to failure in Cross-Window-Message Origin validation

[00:29:33] Unserializable, but unreachable: Remote code execution on vBulletin

[00:34:54] Lexmark MC3224adwe RCE exploit

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