CVE-2021-1501
Description
A vulnerability in the SIP inspection engine 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 crash that occurs during a hash lookup for a SIP pinhole connection. An attacker could exploit this vulnerability by sending crafted SIP traffic through an affected device. A successful exploit could allow the attacker to cause a crash and reload of the affected device.
How to fix
- cisco adaptive_security_appliance_software9.8.4.34, 9.9.2.85, 9.12.4.18, 9.13.1.21, 9.14.2.13, 9.15.1.15 or later
- cisco secure_firewall_threat_defense6.4.0.12, 6.6.4, 6.7.0.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| cisco adaptive_security_appliance_software | 9.8 ≤ v < 9.8.4.34, 9.9 ≤ v < 9.9.2.85, 9.10 ≤ v < 9.12.4.18, 9.13 ≤ v < 9.13.1.21, 9.14 ≤ v < 9.14.2.13, 9.15 ≤ v < 9.15.1.15 | 9.8.4.34, 9.9.2.85, 9.12.4.18, 9.13.1.21, 9.14.2.13, 9.15.1.15 |
| cisco secure_firewall_threat_defense | 6.2.2 ≤ v < 6.4.0.12, 6.5.0 ≤ v < 6.6.4, 6.7.0 ≤ v < 6.7.0.2 | 6.4.0.12, 6.6.4, 6.7.0.2 |
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