Description (CNA)
A vulnerability in the Intermediate System-to-Intermediate System (IS-IS) multi-instance routing feature of Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause the IS-IS process to restart unexpectedly. This vulnerability is due to insufficient input validation of ingress IS-IS packets. An attacker could exploit this vulnerability by sending crafted IS-IS packets to an affected device after forming an adjacency. A successful exploit could allow the attacker to cause the IS-IS process to restart unexpectedly, resulting in a temporary loss of connectivity to advertised networks and a denial of service (DoS) condition. Note: The IS-IS protocol is a routing protocol. To exploit this vulnerability, an attacker must be Layer 2-adjacent to the affected device and must have formed an adjacency.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Cisco / Cisco IOS XR Software | affected 7.8.1; affected 7.9.1; affected 7.10.1; affected 7.8.2; affected 7.8.22; affected 7.9.2; affected 7.11.1; affected 7.9.21; affected 7.10.2; affected 24.1.1; affected 7.11.2; affected 24.2.1; affected 24.1.2; affected 24.2.11; affected 24.3.1; affected 24.4.1; affected 24.2.2; affected 7.8.23; affected 7.11.21; affected 24.2.20; affected 24.3.2; affected 24.4.10; affected 25.1.1; affected 24.4.2; affected 24.3.20; affected 24.4.15; affected 25.2.1; affected 25.1.2; affected 24.3.30; affected 24.4.30; affected 24.2.21; affected 25.2.15 |
CWE
CWE-1287
References
ADP enrichment
No English description supplied.
No references supplied.