جزئیات آسیب‌پذیری

A stack-based buffer overflow vulnerability exists in Synactis PDF In-The-Box ActiveX control (PDF_IN_1.ocx), specifically the ConnectToSynactis method. When a long string is passed to this method—intended to populate the ldCmdLine argument of a WinExec call—a strcpy operation overwrites a saved TRegistry class pointer on the stack. This allows remote attackers to execute arbitrary code in the context of the user by enticing them to visit a malicious webpage that instantiates the vulnerable ActiveX control. The vulnerability was discovered via its use in third-party software such as Logic Print 2013.

• https://www.fortiguard.com/encyclopedia/ips/35840/synactis-pdf-in-the-box-connecttosynactic-buffer-overflow third-party-advisory
• https://www.synactis.com/pdf-in-the-box.htm product
• https://www.vulncheck.com/advisories/synactis-pdf-in-the-box-connectosynactic-stack-based-buffer-overflow third-party-advisory
• https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/browser/synactis_connecttosynactis_bof.rb exploit
• https://www.exploit-db.com/exploits/25835 exploit