Input validation error in Cisco Webex Meetings Desktop App - CVE-2020-3440
Published: August 20, 2020
Vulnerability identifier: #VU45795
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2020-3440
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Cisco Systems, Inc
Affected software:
Cisco Webex Meetings Desktop App
Cisco Webex Meetings Desktop App
Detailed vulnerability description
The vulnerability allows a remote attacker to overwrite critical files on the system.
The vulnerability exists due to insufficient validation of URL parameters when handling external links within the application. A remote attacker can trick the victim to follow a specially crafted link that ones opened with Cisco Webex Meetings Desktop App for Windows may allows an attacker to overwrite arbitrary files on the system.
How to mitigate CVE-2020-3440
Install updates from vendor's website.