CVE-2020-3226
Description
A vulnerability in the Session Initiation Protocol (SIP) library of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to trigger a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient sanity checks on received SIP messages. An attacker could exploit this vulnerability by sending crafted SIP messages to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service condition.
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| cisco ios | 15.0\(2\)sg11a, 15.3\(3\)jaa1, 15.3\(3\)jpi, 15.3\(3\)jpj, 15.3\(3\)m, 15.3\(3\)m1, 15.3\(3\)m2, 15.3\(3\)m3, 15.3\(3\)m4, 15.3\(3\)m5, 15.3\(3\)m6, 15.3\(3\)m7, 15.3\(3\)m8, 15.3\(3\)m8a, 15.3\(3\)m9, 15.3\(3\)m10, 15.3\(3\)xb12, 15.4\(1\)cg, 15.4\(1\)t, 15.4\(1\)t1, 15.4\(1\)t2, 15.4\(1\)t3, 15.4\(1\)t4, 15.4\(2\)cg, 15.4\(2\)t, 15.4\(2\)t1, 15.4\(2\)t2, 15.4\(2\)t3, 15.4\(2\)t4, 15.4\(3\)m, 15.4\(3\)m1, 15.4\(3\)m2, 15.4\(3\)m3, 15.4\(3\)m4, 15.4\(3\)m5, 15.4\(3\)m6, 15.4\(3\)m6a, 15.4\(3\)m7, 15.4\(3\)m7a, 15.4\(3\)m8, 15.4\(3\)m9, 15.4\(3\)m10, 15.5\(1\)t, 15.5\(1\)t1, 15.5\(1\)t2, 15.5\(1\)t3, 15.5\(1\)t4, 15.5\(2\)t, 15.5\(2\)t1, 15.5\(2\)t2, 15.5\(2\)t3, 15.5\(2\)t4, 15.5\(2\)xb, 15.5\(3\)m, 15.5\(3\)m1, 15.5\(3\)m2, 15.5\(3\)m2a, 15.5\(3\)m3, 15.5\(3\)m4, 15.5\(3\)m4a, 15.5\(3\)m4b, 15.5\(3\)m4c, 15.5\(3\)m5, 15.5\(3\)m6, 15.5\(3\)m6a, 15.5\(3\)m7, 15.5\(3\)m8, 15.5\(3\)m9, 15.5\(3\)m10, 15.6\(1\)t, 15.6\(1\)t0a, 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\(3\)m1a, 15.6\(3\)m1b, 15.6\(3\)m2, 15.6\(3\)m2a, 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\(3\)m7, 15.7\(3\)m, 15.7\(3\)m1, 15.7\(3\)m2, 15.7\(3\)m3, 15.7\(3\)m4, 15.7\(3\)m4a, 15.7\(3\)m4b, 15.8\(3\)m, 15.8\(3\)m0a, 15.8\(3\)m1, 15.8\(3\)m2 | — |
| cisco ios_xe | 3.10.0s, 3.10.1s, 3.10.2as, 3.10.2s, 3.10.2ts, 3.10.3s, 3.10.4s, 3.10.5s, 3.10.6s, 3.10.7s, 3.10.8as, 3.10.8s, 3.10.9s, 3.10.10s, 3.11.0s, 3.11.1s, 3.11.2s, 3.11.3s, 3.11.4s, 3.12.0as, 3.12.0s, 3.12.1s, 3.12.2s, 3.12.3s, 3.12.4s, 3.13.0s, 3.13.1s, 3.13.2as, 3.13.2s, 3.13.3s, 3.13.4s, 3.13.5as, 3.13.5s, 3.13.6as, 3.13.6bs, 3.13.6s, 3.13.7as, 3.13.7s, 3.13.8s, 3.13.9s, 3.13.10s, 3.14.0s, 3.14.1s, 3.14.2s, 3.14.3s, 3.14.4s, 3.15.0s, 3.15.1cs, 3.15.1s, 3.15.2s, 3.15.3s, 3.15.4s, 3.16.0cs, 3.16.0s, 3.16.1as, 3.16.1s, 3.16.2bs, 3.16.2s, 3.16.3s, 3.16.4as, 3.16.4bs, 3.16.4cs, 3.16.4ds, 3.16.4es, 3.16.4gs, 3.16.5as, 3.16.5bs, 3.16.5s, 3.16.6bs, 3.16.6s, 3.16.7as, 3.16.7bs, 3.16.7s, 3.16.8s, 3.16.9s, 3.16.10s, 3.17.0s, 3.17.1as, 3.17.1s, 3.17.2s, 3.17.3s, 3.17.4s, 3.18.0as, 3.18.1asp, 3.18.1sp, 3.18.2asp, 3.18.3asp, 3.18.3bsp, 3.18.3sp, 3.18.4sp, 3.18.5sp, 3.18.6sp, 16.2.1, 16.2.2, 16.3.1, 16.3.1a, 16.3.2 | — |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.