Medium · published October 21, 2020
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.
| Product | Versions | Fixed in |
|---|---|---|
| cisco/adaptive_security_appliance | < 9.6.4.43 | 9.6.4.43 |
| cisco/secure_firewall_threat_defense | ≤ 6.2.2 | — |
| cisco/secure_firewall_threat_defense | ≥ 6.3.0, < 6.3.0.6 | 6.3.0.6 |
| cisco/secure_firewall_threat_defense | ≥ 6.4.0, < 6.4.0.10 | 6.4.0.10 |
| cisco/secure_firewall_threat_defense | ≥ 6.5.0, < 6.5.0.5 | 6.5.0.5 |
| cisco/secure_firewall_threat_defense | all versions | — |
| cisco/adaptive_security_appliance_software | ≥ 9.7.0, < 9.8.4.24 | 9.8.4.24 |
| cisco/adaptive_security_appliance_software | ≥ 9.9.0, < 9.9.2.80 | 9.9.2.80 |
| cisco/adaptive_security_appliance_software | ≥ 9.10.0, < 9.10.1.43 | 9.10.1.43 |
| cisco/adaptive_security_appliance_software | ≥ 9.12.0, < 9.12.4.2 | 9.12.4.2 |
| cisco/adaptive_security_appliance_software | ≥ 9.13.0, < 9.13.1.13 | 9.13.1.13 |
| cisco/adaptive_security_appliance_software | ≥ 9.14.0, < 9.14.1.19 | 9.14.1.19 |