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.
How to fix
- cisco adaptive_security_appliance9.6.4.43 or later
- cisco secure_firewall_threat_defense6.3.0.6, 6.4.0.10, 6.5.0.5 or later
- cisco adaptive_security_appliance_software9.8.4.24, 9.9.2.80, 9.10.1.43, 9.12.4.2, 9.13.1.13, 9.14.1.19 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| cisco adaptive_security_appliance | v < 9.6.4.43 | 9.6.4.43 |
| cisco secure_firewall_threat_defense | v ≤ 6.2.2, 6.3.0 ≤ v < 6.3.0.6, 6.4.0 ≤ v < 6.4.0.10, 6.5.0 ≤ v < 6.5.0.5, 6.6.0 | 6.3.0.6, 6.4.0.10, 6.5.0.5 |
| cisco adaptive_security_appliance_software | 9.7.0 ≤ v < 9.8.4.24, 9.9.0 ≤ v < 9.9.2.80, 9.10.0 ≤ v < 9.10.1.43, 9.12.0 ≤ v < 9.12.4.2, 9.13.0 ≤ v < 9.13.1.13, 9.14.0 ≤ v < 9.14.1.19 | 9.8.4.24, 9.9.2.80, 9.10.1.43, 9.12.4.2, 9.13.1.13, 9.14.1.19 |
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Attack Surface Management
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