EUVD-2020-19732

Malware in sbrugna...

Code injection

An issue was discovered in Ethernut Nut/OS 5.1. The code that generates Initial Sequence Numbers ISNs for TCP connections derives the ISN from an insufficiently random source. As a result, an attacker may be able to determine the ISN of current and future TCP connections and either hijack existin...

TCP does not adequately validate segments before updating timestamp value

Overview Certain TCP implementations may allow a remote attacker to arbitrarily modify host timestamp values, leading to a denial-of-service condition. Description The Transmission Control Protocol TCP is defined in RFC 793 as a means to provide reliable host-to-host transmission between hosts in...