In Pure-FTPd before 1.0.50, an incorrect max_filesize quota mechanism in the server allows attackers to upload files of unbounded size, which may lead to denial of service or a server hang. This occurs because a certain greater-than-zero test does not anticipate an initial -1 value. (Versions 1.0.23 through 1.0.49 are affected.)
Pure-FTPd versions 1.0.23 through 1.0.49 contain an arbitrary file upload vulnerability due to max_filesize quota issue, allowing large or unbounded file uploads that can cause server hang or resource exhaustion.
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