CVE:CVE-2021-1573
CNNVD:CNNVD-202110-2005
Cisco Firepower Threat Defense（FTD）和Cisco Adaptive Security Appliances Software（ASA Software）都是美国思科（Cisco）公司的产品。Cisco Firepower Threat Defense是一套提供下一代防火墙服务的统一软件。Cisco Adaptive Security Appliances Software是一套防火墙和网络安全平台。该平台提供了对数据和网络资源的高度安全的访问等功能。
Cisco Adaptive Security Appliances Software和Cisco Firepower Threat Defense存在缓冲区错误漏洞，该漏洞源于解析HTTPS请求时不正确的输入验证造成的。攻击者可利用该漏洞触发拒绝服务(DoS)条件。
solution:Upgrade cisco adaptive_security_appliance to a higher version than 9.7,and avoid the version (,9.7]; Upgrade cisco firepower_threat_defense to a higher version than 6.2.2,6.4.0.13,6.6.5,6.7.0.3,7.0.0,and avoid the version (,6.2.2],[6.2.3,6.4.0.13),[6.5.0,6.6.5),[6.7.0,6.7.0.3),7.0.0; Upgrade cisco adaptive_security_appliance_software to a higher version than 9.8.4.40,9.12.4.26,9.14.3,9.15.1.17,9.16.1.28,and avoid the version [9.8,9.8.4.40),[9.9,9.12.4.26),[9.13,9.14.3),[9.15,9.15.1.17),[9.16,9.16.1.28)