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Cisco ASA: CVE-2018-0231: Cisco Adaptive Security Appliance TLS Denial of Service Vulnerability

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Cisco ASA: CVE-2018-0231: Cisco Adaptive Security Appliance TLS Denial of Service Vulnerability

Severity
8
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:C)
Published
04/19/2018
Created
07/25/2018
Added
04/19/2018
Modified
05/09/2022

Description

A vulnerability in the Transport Layer Security (TLS) library of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to trigger a reload of the affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending a malicious TLS message to an interface enabled for Secure Layer Socket (SSL) services on an affected device. Messages using SSL Version 3 (SSLv3) or SSL Version 2 (SSLv2) cannot be be used to exploit this vulnerability. An exploit could allow the attacker to cause a buffer underflow, triggering a crash on an affected device. This vulnerability affects Cisco ASA Software and Cisco FTD Software that is running on the following Cisco products: Adaptive Security Virtual Appliance (ASAv), Firepower Threat Defense Virtual (FTDv), Firepower 2100 Series Security Appliance. Cisco Bug IDs: CSCve18902, CSCve34335, CSCve38446.

Solution(s)

  • cisco-asa-update-latest

References

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