PT-2020-4222 · Cisco · Cisco Webex Meetings Desktop App+1

Published 2020-08-05 · Updated 2020-08-19 · CVE-2020-3502

Positive Technologies (AI Summary)

CVSS v3.1

4.1

Medium

Base vector

AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:N/A:N

Name of the Vulnerable Software and Affected Versions: Cisco Webex Meetings Desktop App (affected versions not specified) Cisco Webex Meetings Server (affected versions not specified)

Description: The issue is related to improper input validation of parameters returned to the application from a website, which could allow an authenticated, remote attacker to obtain restricted information from other Webex users. An attacker with a valid Webex account could exploit this by persuading a user to follow a maliciously designed URL that returns malicious path parameters to the affected software. A successful exploit could allow the attacker to obtain restricted information from other Webex users.

Recommendations: For Cisco Webex Meetings Desktop App, update the software to a version that includes proper input validation to prevent exploitation. For Cisco Webex Meetings Server, ensure that all input parameters are thoroughly validated to prevent unauthorized access to restricted information. As a temporary workaround, consider restricting access to sensitive information within the Webex environment until a patch is available.

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2020-04662

CVE-2020-3502

Affected Products

Cisco Webex Meetings Desktop App

Cisco Webex Meetings Server

References · 4

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webex-client-g3zevBcp · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-3502 · Security Note
• https://bdu.fstec.ru/vul/2020-04662 · Security Note
• https://osv.dev/vulnerability/CVE-2020-3502 · Vendor Advisory