CVE:CVE-2022-20726
CNNVD:CNNVD-202204-3312
Cisco Iox是美国思科（Cisco）公司的一个结合了Cisco IOS和Linux OS用于安全网络连接以及开发IOT应用的安全开发环境。
Cisco Iox 应用托管环境存在安全漏洞，该漏洞源于套接字操作的错误处理不足。攻击者可以通过向受影响设备上的 IOx Web 服务器发送持续速率的压缩 TCP 流量来利用此漏洞。成功利用此漏洞可让攻击者导致 IOx Web 服务器停止处理请求，从而导致 DoS 情况。以下产品和版本受到影响：Cisco 809 工业集成多业务路由器 (工业 ISRs)、Cisco 829 工业 ISRs、Cisco CGR 1000 计算模块和Cisco IC3000 工业计算网关。
solution:Upgrade cisco cgr1000_compute_module to a higher version than *; Upgrade cisco ic3000_industrial_compute_gateway to a higher version than *; Upgrade cisco ios to a higher version than *,15.2(5e1,15.2(5e2c,15.2(6e0a,15.2(6e1,15.2(6e2a,15.2(7e,15.2(7e0b,15.2(7e0s,15.6(1t1,15.6(1t2,15.6(1t3,15.6(2t,15.6(2t1,15.6(2t2,15.6(2t3,15.6(3m,15.6(3m0a,15.6(3m1,15.6(3m1b,15.6(3m2,15.6(3m3,15.6(3m3a,15.6(3m4,15.6(3m5,15.6(3m6,15.6(3m6a,15.6(3m6b,15.6(3m7,15.6(3m8,15.7(3m,15.7(3m0a,15.7(3m1,15.7(3m2,15.7(3m3,15.7(3m4,15.7(3m4a,15.7(3m4b,15.7(3m5,15.7(3m6,15.8(3m,15.8(3m0a,15.8(3m1,15.8(3m2,15.8(3m2a,15.8(3m3,15.8(3m4,15.8(3m5,15.8(3m6,15.8(3m7,15.9(3m,15.9(3m1,15.9(3m2,15.9(3m2a,15.9(3m3,15.9(3m4,15.9(3m4a,and avoid the version 15.2(5)e1,15.2(5)e2c,15.2(6)e0a,15.2(6)e1,15.2(6)e2a,15.2(7)e,15.2(7)e0b,15.2(7)e0s,15.6(1)t1,15.6(1)t2,15.6(1)t3,15.6(2)t,15.6(2)t1,15.6(2)t2,15.6(2)t3,15.6(3)m,15.6(3)m0a,15.6(3)m1,15.6(3)m1b,15.6(3)m2,15.6(3)m3,15.6(3)m3a,15.6(3)m4,15.6(3)m5,15.6(3)m6,15.6(3)m6a,15.6(3)m6b,15.6(3)m7,15.6(3)m8,15.7(3)m,15.7(3)m0a,15.7(3)m1,15.7(3)m2,15.7(3)m3,15.7(3)m4,15.7(3)m4a,15.7(3)m4b,15.7(3)m5,15.7(3)m6,15.8(3)m,15.8(3)m0a,15.8(3)m1,15.8(3)m2,15.8(3)m2a,15.8(3)m3,15.8(3)m4,15.8(3)m5,15.8(3)m6,15.8(3)m7,15.9(3)m,15.9(3)m1,15.9(3)m2,15.9(3)m2a,15.9(3)m3,15.9(3)m4,15.9(3)m4a