SB2017100515 - Denial of service in Cisco IOS XR
Published: October 5, 2017
Security Bulletin ID
SB2017100515
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Denial of service (CVE-ID: CVE-2017-12270)
The vulnerability allows a remote attacker to cause DoS condition on the target system.The weakness exists in the gRPC code of Cisco IOS XR Software for Cisco Network Convergence System (NCS) 5500 Series Routers due to the software's inability to process HTTP/2 packets. A remote attacker can send a specially crafted HTTP/2 frame and cause the emsd service stops.
Successful exploitation of the vulnerability results in denial of service.
Remediation
Install update from vendor's website.