National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2019-13450 Detail

Current Description

In the Zoom Client through 4.4.4 and RingCentral 7.0.136380.0312 on macOS, remote attackers can force a user to join a video call with the video camera active. This occurs because any web site can interact with the Zoom web server on localhost port 19421 or 19424. NOTE: a machine remains vulnerable if the Zoom Client was installed in the past and then uninstalled. Blocking exploitation requires additional steps, such as the ZDisableVideo preference and/or killing the web server, deleting the ~/.zoomus directory, and creating a ~/.zoomus plain file.

Source:  MITRE
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 6.5 MEDIUM
Vector: AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N (V3.0 legend)
Impact Score: 3.6
Exploitability Score: 2.8


Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): None
Availability (A): None

CVSS v2.0 Severity and Metrics:

Base Score: 4.3 MEDIUM
Vector: (AV:N/AC:M/Au:N/C:P/I:N/A:N) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 8.6


Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): None
Availability (A): None
Additional Information:
Victim must voluntarily interact with attack mechanism
Allows unauthorized disclosure of information

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://www.securityfocus.com/bid/109082 Third Party Advisory VDB Entry
https://assets.zoom.us/docs/pdf/Zoom+Response+Video-On+Vulnerability.pdf Vendor Advisory
https://blog.zoom.us/wordpress/2019/07/08/response-to-video-on-concern/ Vendor Advisory
https://bugs.chromium.org/p/chromium/issues/detail?id=951540 Exploit Third Party Advisory
https://medium.com/@jonathan.leitschuh/zoom-zero-day-4-million-webcams-maybe-an-rce-just-get-them-to-visit-your-website-ac75c83f4ef5 Third Party Advisory
https://news.ycombinator.com/item?id=20387298 Issue Tracking Third Party Advisory
https://twitter.com/moreati/status/1148548799813640193 Third Party Advisory
https://twitter.com/zoom_us/status/1148710712241295361 Third Party Advisory

Technical Details

Vulnerability Type (View All)

  • Improper Access Control (CWE-284)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:ringcentral:ringcentral:7.0.136380.0312:*:*:*:*:mac_os_x:*:*
     Show Matching CPE(s)
 cpe:2.3:a:zoom:zoom:*:*:*:*:*:mac_os_x:*:*
     Show Matching CPE(s)
Up to (including)
4.4.4


Change History

6 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-13450
NVD Published Date:
07/09/2019
NVD Last Modified:
07/16/2019