wrshdsp.exe in Denicomp Winsock RSHD/NT 2.21.00 and earlier allows remote attackers to cause a denial of service (CPU consumption) via (1) in 2.20.00 and earlier, an invalid port number such as a negative number, which causes a connection attempt to that port and all ports below 1024, and (2) in 2.21.00, a port number of 1024.

References

• https://nvd.nist.gov/vuln/detail/CVE-2001-1184
• http://online.securityfocus.com/archive/1/245405
• http://www.denicomp.com/rshdnt.htm
• http://www.iss.net/security_center/static/7694.php
• http://www.securityfocus.com/archive/1/244580
• http://www.securityfocus.com/bid/3659