Input validation error in Cisco IOS XR - CVE-2019-16027
Published: January 24, 2020
Vulnerability identifier: #VU24523
CSH Severity: Medium
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-16027
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper handling of a Simple Network Management Protocol (SNMP) request for specific Object Identifiers (OIDs) by the Intermediate System–to–Intermediate System (IS–IS) process. A remote authenticated attacker can send a specially crafted SNMP request and cause a denial of service condition in the IS–IS process.
Affected software
Cisco IOS XR
How to mitigate CVE-2019-16027
Install updates from vendor's website.
Cisco IOS XR - update to 6.6.3