chat.ghp in Easy Chat Server 1.2 allows remote attackers to cause a denial of service (server crash) via a long username parameter, possibly due to a buffer overflow. NOTE: it was later reported that 2.2 is also affected.
https://www.exploit-db.com/exploits/4289
https://exchange.xforce.ibmcloud.com/vulnerabilities/36013
https://exchange.xforce.ibmcloud.com/vulnerabilities/16629
http://www.vupen.com/english/advisories/2007/2901
http://www.securityfocus.com/bid/67384
http://www.securityfocus.com/bid/25328
http://www.exploit-db.com/exploits/33326
http://secunia.com/advisories/58427
http://secunia.com/advisories/26461
http://packetstormsecurity.com/files/167892/Easy-Chat-Server-3.1-Buffer-Overflow.html