Denial of service in Cisco IOS XR - CVE-2017-12270
Published: October 5, 2017
Vulnerability identifier: #VU8715
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2017-12270
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Cisco Systems, Inc
Affected software:
Cisco IOS XR
Cisco IOS XR
Detailed vulnerability description
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.
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.
How to mitigate CVE-2017-12270
Install update from vendor's website.