I finally finished my Linux Crossfire Buffer Overflow exploit, so I thought I'd share.Crossfire Buffer Overflow - IntroductionThe Crossfire RPG for Linux is vulnerable to a in the.This is a vulnerability that partly covered in his exploit development course, so I thought I'd share.If you do not want to follow along, then there is already a working. Attempting to InstallFirst, I attempted to install the from the exploit-db posting. Root@kali: /crossfire# wget 17:17:22- www.exploit-db.com (www.exploit-db.com).
192.124.249.8Connecting to www.exploit-db.com (www.exploit-db.com) 192.124.249.8 :443. Connected.HTTP request sent, awaiting response. Ray Doyle is an avid pentester/security enthusiast/beer connoisseur who has worked in IT for almost 16 years now. From building machines and the software on them, to breaking into them and tearing it all down; he's done it all. To show for it, he has obtained an OSCE, OSCP, eCPPT, GXPN, eWPT, eWPTX, SLAE, eMAPT, Security+, ICAgile CP, ITIL v3 Foundation, and even a sabermetrics certification!He currently serves as a Senior Penetration tester for Avalara, and his previous position was a Principal Penetration Testing Consultant for Secureworks.When he's not figuring out what cert to get next or side project to work on, he enjoys playing video games, traveling, and watching sports.
The Game Security Module Update Has Failed Crossfire Free
The Game Security Module Update Has Failed Crossfire 3
So, for some exploits, sending a buffer that is TOO long can cause one of a few issues. The stack frame is overflown, and causes the program to not crash/crash as expected. The overflow overwrites some key piece of data, that would actually cause EIP to be overwritten in the first caseFor this exploit, it looks like #2 is happening. That said, I’m honestly not sure what in particular is breaking. I’d love to look into it more, but I get similar results with a buffer of 4379 vs. Thankfully, in this case, I had the existing PoC to build off of.