Cisco Bug: CSCvh95456 - Cisco Adaptive Security Appliance Application Layer Protocol Inspection DoS Vulnerabilities
Sep 19, 2019
- Cisco ASA 5500-X Series Firewalls
Known Affected Releases
101.4(1.24) 9.6(3.20) 9.8(2.21) 99.1(20.190) 99.2(0.32)
Symptom: Multiple vulnerabilities in the Application Layer Protocol Inspection feature 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 an affected device, resulting in a denial of service (DoS) condition. The vulnerabilities are due to logical errors during traffic inspection. An attacker could exploit these vulnerabilities by sending a high volume of malicious traffic across an affected device. An exploit could allow the attacker to cause a deadlock condition, resulting in a reload of an affected device. Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities. This advisory is available at the following link: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180418-asa_inspect Conditions: Please refer to the security advisory.
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