{"schemaVersion":3,"id":"CVE-2013-1864","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"The Portable Tool Library (aka PTLib) before 2.10.10, as used in Ekiga before 4.0.1, does not properly detect recursion during entity expansion, which allows remote attackers to cause a denial of service (memory and CPU consumption) via a crafted PXML document containing a large number of nested entity references, aka a \"billion laughs 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