socat 126.96.36.199 before 188.8.131.52 and 2.0.0-b1 before 2.0.0-b6, when used for a listen type address and the fork option is enabled, allows remote attackers to cause a denial of service (file descriptor consumption) via multiple request that are refused based on the (1) sourceport, (2) lowport, (3) range, or (4) tcpwrap restrictions.
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[oss-security] 20130526 socat security advisory 4 - CVE-2013-3571