CVE-2020-3555
A vulnerability in the SIP inspection process of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow…
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Cisco | Adaptive Security Appliance | before 9.6.4.43 |
| Cisco | Secure Firewall Threat Defense | through 6.2.2 from 6.3.0 before 6.3.0.6 from 6.4.0 before 6.4.0.10 from 6.5.0 before 6.5.0.5 Version 6.6.0 |
| Cisco | Adaptive Security Appliance Software | from 9.7.0 before 9.8.4.24 from 9.9.0 before 9.9.2.80 from 9.10.0 before 9.10.1.43 from 9.12.0 before 9.12.4.2 from 9.13.0 before 9.13.1.13 from 9.14.0 before 9.14.1.19 |