Format string vulnerability in the Epic Games Unreal engine client, as used in multiple games, allows remote servers to execute arbitrary code via (1) the CLASS parameter in a DLMGR command, (2) a malformed package (PKG), and possibly (3) the LEVEL parameter in a WELCOME command.

References

• https://nvd.nist.gov/vuln/detail/CVE-2008-6441
• https://exchange.xforce.ibmcloud.com/vulnerabilities/45088
• https://exchange.xforce.ibmcloud.com/vulnerabilities/45089
• https://exchange.xforce.ibmcloud.com/vulnerabilities/45090
• http://aluigi.altervista.org/adv/unrealcfs-adv.txt
• http://archives.neohapsis.com/archives/fulldisclosure/2008-09/0190.html
• http://secunia.com/advisories/31854
• http://www.osvdb.org/48290
• http://www.osvdb.org/48291
• http://www.securityfocus.com/archive/1/496297/100/0/threaded
• http://www.securityfocus.com/bid/31141