{"schemaVersion":3,"id":"CVE-2021-42717","aliases":["MGASA-2021-0576","UBUNTU-CVE-2021-42717","DEBIAN-CVE-2021-42717","DLA-3031-1","DSA-5023-1"],"status":"published","duplicateOf":null,"title":null,"description":"ModSecurity 3.x through 3.0.5 mishandles excessively nested JSON objects. Crafted JSON objects with nesting tens-of-thousands deep could result in the web server being unable to service legitimate requests. Even a moderately large (e.g., 300KB) HTTP request can occupy one of the limited NGINX worker processes for minutes and consume almost all of the available CPU on the machine. 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