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Scapy-Sploit, Plugin Problems and the Year of Drupal

January 09, 2019 / Kacy Zurkus

A Python network tool, Scapy, is vulnerable to denial-of-service (DoS) attacks, according research published by Imperva. The company also released its 2018 State of Web Application Vulnerabilities, which found that injections represented 19% of the total vulnerabilities in 2018, while plugins were the root cause of 98% of the vulnerabilities in WordPress. In the latest version of Scapy, the algorithm used to determine the type of network packet relies on port numbers, but the packet type can easily be spoofed. According to researchers, “The vulnerability occurs when Scapy is tricked into thinking a network packet is a RADIUS packet. The vulnerability is due to a lack of input validation when reading the length field in the RADIUS packet’s Attribute Value Pairs (AVP). This can cause an infinite loop in the following code section if a certain byte is set to zero.”