The flaw was found in the Transmission Control Protocol, according to an advisory from the United Kingdom’s National Infrastructure Security Coordination Centre.
The hole exists in all implementations of TCP that comply with the Internet Engineering Task Force’s TCP specification. By exploiting the holes, malicious hackers could cause TCP sessions to end prematurely, creating a “denial of service,” or DOS attack. The TCP vulnerability could also disrupt communications between routers on the Internet by interrupting Border Gateway Protocol sessions that use TCP, NISCC says.
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