PT-2021-20524 · Zoom · Zoom Client For Meetings+1

Johnny Yu · Published 2021-12-14 · Updated 2022-04-12 · CVE-2021-34425

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions: Zoom Client for Meetings versions prior to 5.7.3

Description: The issue concerns a server-side request forgery vulnerability in the chat's "link preview" functionality. If a user enables this feature, a malicious actor could trick the user into sending arbitrary HTTP GET requests to URLs that the actor cannot reach directly.

Recommendations: For versions prior to 5.7.3, update to version 5.7.3 or later to resolve the issue. As a temporary workaround, consider disabling the "link preview" feature in the chat until a patch is available.

Fix

SSRF

Weakness Enumeration

CWE-918

Related Identifiers

CVE-2021-34425

Affected Products

Zoom Client For Meetings

Zoom

References · 4

• https://osv.dev/vulnerability/CVE-2021-34425 · Vendor Advisory
• https://explore.zoom.us/en/trust/security/security-bulletin · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-34425 · Security Note
• https://t.me/cibsecurity/33969 · Telegram Post