CVE-2002-0515

https://notcve.org/view.php?id=CVE-2002-0515

IPFilter 3.4.25 and earlier sets a different TTL when a port is being filtered than when it is not being filtered, which allows remote attackers to identify filtered ports by comparing TTLs. IPFilter 3.4.25 y anteriores establece un TTL distinto cuando un puerto está siendo filtrado a cuando no lo está, lo que permite a atacantes remotos identificar puertos filtrados comparando los TTL. • http://www.iss.net/security_center/static/8738.php http://www.securityfocus.com/archive/1/265188 http://www.securityfocus.com/bid/4403 • CWE-203: Observable Discrepancy •