CVE-2020-3555
Description
A vulnerability in the SIP inspection process of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a crash and reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to a watchdog timeout and crash during the cleanup of threads that are associated with a SIP connection that is being deleted from the connection list. An attacker could exploit this vulnerability by sending a high rate of crafted SIP traffic through an affected device. A successful exploit could allow the attacker to cause a watchdog timeout and crash, resulting in a crash and reload of the affected device.
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Affected products
7cpe:2.3:a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:*range: <9.6.4.43
- cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*range: >=9.7.0,<9.8.4.24
cpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:*range: <=6.2.2
- cpe:2.3:a:cisco:secure_firewall_threat_defense:6.6.0:*:*:*:*:*:*:*
- Range: n/a
Patches
Vulnerability mechanics
References
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