CVE:CVE-2020-3189
CNNVD:CNNVD-202005-207
Cisco Firepower Threat Defense（FTD）是美国思科（Cisco）公司的一套提供下一代防火墙服务的统一软件。
Cisco FTD Software中的VPN System Logging功能存在资源管理错误漏洞，该漏洞源于在VPN会话创建或删除时程序没有为所生成的VPN System Logging事件正确地释放内存。远程攻击者可通过不断创建或删除VPN隧道连接利用该漏洞造成系统内存耗尽，导致拒绝服务。以下产品及版本受到影响：Cisco FTD Software 6.2.3.12版本，6.2.3.13版本，6.2.3.14版本，6.2.3.15版本。
solution:Upgrade cisco firepower_threat_defense to a higher version than 6.2.3.12,6.2.3.13,6.2.3.14,6.2.3.15,and avoid the version 6.2.3.12,6.2.3.13,6.2.3.14,6.2.3.15; Upgrade cisco asa_5505_firmware to a higher version than 9.9(2,9.9(2.21,9.9(2.52,9.9(2.55,and avoid the version 9.9(2),9.9(2.21),9.9(2.52),9.9(2.55); Upgrade cisco asa_5510_firmware to a higher version than 9.9(2,9.9(2.21,9.9(2.52,9.9(2.55,and avoid the version 9.9(2),9.9(2.21),9.9(2.52),9.9(2.55); Upgrade cisco asa_5512-x_firmware to a higher version than 9.9(2,9.9(2.21,9.9(2.52,9.9(2.55,and avoid the version 9.9(2),9.9(2.21),9.9(2.52),9.9(2.55); Upgrade cisco asa_5515-x_firmware to a higher version than 9.9(2,9.9(2.21,9.9(2.52,9.9(2.55,and avoid the version 9.9(2),9.9(2.21),9.9(2.52),9.9(2.55); Upgrade cisco asa_5520_firmware to a higher version than 9.9(2,9.9(2.21,9.9(2.52,9.9(2.55,and avoid the version 9.9(2),9.9(2.21),9.9(2.52),9.9(2.55); Upgrade cisco asa_5525-x_firmware to a higher version than 9.9(2,9.9(2.21,9.9(2.52,9.9(2.55,and avoid the version 9.9(2),9.9(2.21),9.9(2.52),9.9(2.55); Upgrade cisco asa_5540_firmware to a higher version than 9.9(2,9.9(2.21,9.9(2.52,9.9(2.55,and avoid the version 9.9(2),9.9(2.21),9.9(2.52),9.9(2.55); Upgrade cisco asa_5545-x_firmware to a higher version than 9.9(2,9.9(2.21,9.9(2.52,9.9(2.55,and avoid the version 9.9(2),9.9(2.21),9.9(2.52),9.9(2.55); Upgrade cisco asa_5550_firmware to a higher version than 9.9(2,9.9(2.21,9.9(2.52,9.9(2.55,and avoid the version 9.9(2),9.9(2.21),9.9(2.52),9.9(2.55); Upgrade cisco asa_5555-x_firmware to a higher version than 9.9(2,9.9(2.21,9.9(2.52,9.9(2.55,and avoid the version 9.9(2),9.9(2.21),9.9(2.52),9.9(2.55); Upgrade cisco asa_5580_firmware to a higher version than 9.9(2,9.9(2.21,9.9(2.52,9.9(2.55,and avoid the version 9.9(2),9.9(2.21),9.9(2.52),9.9(2.55); Upgrade cisco asa_5585-x_firmware to a higher version than 9.9(2,9.9(2.21,9.9(2.52,9.9(2.55,and avoid the version 9.9(2),9.9(2.21),9.9(2.52),9.9(2.55)