Cisco released security updates for a “high” rated vulnerability in its Adaptive Security Appliance Software and Firepower Threat Defense Software products that could allow a remote attacker to cause a denial-of-service condition

The vulnerability, CVE-2019-1873, is in the cryptographic driver of the products, according to a July 10 security update.

The bug is due to incomplete input validation of a Secure Sockets Layer (SSL) or Transport Layer Security (TLS) ingress packet header and can be exploited by sending a crafted TLS/SSL packet to an interface on the targeted device. 

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