#VU47234 Error Handling in Cisco Catalyst 9200 Series Switches and Cisco IOS XE - CVE-2020-3510

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Main Vulnerability Database Vulnerabilities #VU47234

#VU47234 Error Handling in Cisco Catalyst 9200 Series Switches and Cisco IOS XE - CVE-2020-3510

Published: September 24, 2020 / Updated: October 1, 2020


Vulnerability identifier: #VU47234
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2020-3510
CWE-ID: CWE-388
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Cisco Catalyst 9200 Series Switches
Cisco IOS XE
Software vendor:
Cisco Systems, Inc

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient error handling when parsing DNS requests in the Umbrella Connector component. A remote attacker can send a series of malicious DNS requests to an Umbrella Connector client interface and cause a denial of service condition.


Remediation

Install updates from vendor's website.

External links