Synactis PDF In-The-Box ConnectToSynactic Stack-Based Buffer Overflow
36Vexday Risk Score
Patch soon. It has a working public exploit.
ssvc Attendcvss 7.5epss 1.2%
from disclosure to weapon0 days
Published on NVDAug 1
metasploitMay 30
exploitation probability
1.2%top 35% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected products
Synactis · PDF In-The-BoxReferences
https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/browser/synactis_connecttosynactis_bof.rbhttps://www.exploit-db.com/exploits/25835https://www.fortiguard.com/encyclopedia/ips/35840/synactis-pdf-in-the-box-connecttosynactic-buffer-overflowhttps://www.synactis.com/pdf-in-the-box.htmhttps://www.vulncheck.com/advisories/synactis-pdf-in-the-box-connectosynactic-stack-based-buffer-overflow