CVE:CVE-2020-3353
CNNVD:CNNVD-202006-355
Cisco Identity Services Engine（ISE）是美国思科（Cisco）公司的一款基于身份的环境感知平台（ISE身份服务引擎）。该平台通过收集网络、用户和设备中的实时信息，制定并实施相应策略来监管网络。
Cisco Identity Services Engine 2.2.0.470-Patch13之前版本、2.3.0.298-Patch6之前版本和2.4.0.357-Patch2之前版本中的syslog处理引擎存在竞争条件问题漏洞。攻击者可通过向受影响的设备发送大量Syslog消息利用该漏洞导致Application Server进程崩溃，进而导致拒绝服务。
solution:Upgrade cisco identity_services_engine to a higher version than 2.2.0.470,2.2.0.470:patch1,2.2.0.470:patch10,2.2.0.470:patch11,2.2.0.470:patch12,2.2.0.470:patch2,2.2.0.470:patch3,2.2.0.470:patch4,2.2.0.470:patch5,2.2.0.470:patch6,2.2.0.470:patch7,2.2.0.470:patch8,2.2.0.470:patch9,2.3.0.298,2.3.0.298:patch1,2.3.0.298:patch2,2.3.0.298:patch3,2.3.0.298:patch4,2.3.0.298:patch5,2.4.0.357,2.4.0.357:patch1,and avoid the version 2.2.0.470,2.2.0.470:patch1,2.2.0.470:patch10,2.2.0.470:patch11,2.2.0.470:patch12,2.2.0.470:patch2,2.2.0.470:patch3,2.2.0.470:patch4,2.2.0.470:patch5,2.2.0.470:patch6,2.2.0.470:patch7,2.2.0.470:patch8,2.2.0.470:patch9,2.3.0.298,2.3.0.298:patch1,2.3.0.298:patch2,2.3.0.298:patch3,2.3.0.298:patch4,2.3.0.298:patch5,2.4.0.357,2.4.0.357:patch1