CVE-2021-34749 – Multiple Cisco Products Server Name Identification Data Exfiltration Vulnerability

https://notcve.org/view.php?id=CVE-2021-34749

18 Aug 2021 — A vulnerability in Server Name Identification (SNI) request filtering of Cisco Web Security Appliance (WSA), Cisco Firepower Threat Defense (FTD), and the Snort detection engine could allow an unauthenticated, remote attacker to bypass filtering technology on an affected device and exfiltrate data from a compromised host. This vulnerability is due to inadequate filtering of the SSL handshake. An attacker could exploit this vulnerability by using data from the SSL client hello packet to communicate with an e... • https://lists.debian.org/debian-lts-announce/2023/02/msg00011.html • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •