CVE Catalog

CVE-2017-12270

High
Published: Translated: NVD NIST

Summary

A vulnerability in the gRPC code of Cisco IOS XR Software for Cisco Network Convergence System (NCS) 5500 Series Routers could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition when the emsd service stops. The vulnerability is due to the software's inability to process HTTP/2 packets.

Risk Assessment

The organization may be exposed to DoS attacks, which could lead to service availability interruptions. The stopping of the emsd service may affect the stability and performance of the system.

Recommendation

It is recommended to update the software to the latest version to mitigate this vulnerability. Monitoring HTTP/2 traffic and implementing appropriate security measures may also help minimize risk.

Related vulnerabilities

Original NVD description (English source)

A vulnerability in the gRPC code of Cisco IOS XR Software for Cisco Network Convergence System (NCS) 5500 Series Routers could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition when the emsd service stops. The vulnerability is due to the software's inability to process HTTP/2 packets. An attacker could exploit this vulnerability by sending a malformed HTTP/2 frame to the affected device. A successful exploit could allow the attacker to create a DoS condition when the emsd service stops. Cisco Bug IDs: CSCvb99388.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS