Affects the software. The Flaw: The SSH service lacks effective flood protection.
A critical security vulnerability has been discovered in Cisco devices, which could allow an attacker to gain unauthorized access to your network. The vulnerability, known as SSH20Cisco125, affects various Cisco devices and has been assigned the CVE identifier CVE-2023-20186. In this post, we'll dive into the details of the vulnerability, its impact, and provide guidance on how to mitigate it.
The SSH20Cisco125 vulnerability highlights the ongoing need for vigilance in network infrastructure management. By understanding the nature of this threat—a sophisticated manipulation of the SSHv2 protocol—security teams can take proactive measures.
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This vulnerability is notably distinct from standard CVEs, often highlighting a "zero-day" or newly discovered exploit path that bypasses traditional signature-based detection.
Insufficient validation of user input during the authentication phase.
Use CoPP to drop unauthorized SSH packets before they reach the device's route processor.