CVE-2019-13450

MEDIUM

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.

References

http://www.securityfocus.com/bid/109082

https://assets.zoom.us/docs/pdf/Zoom+Response+Video-On+Vulnerability.pdf

https://blog.zoom.us/wordpress/2019/07/08/response-to-video-on-concern/

https://bugs.chromium.org/p/chromium/issues/detail?id=951540

https://medium.com/@jonathan.leitschuh/zoom-zero-day-4-million-webcams-maybe-an-rce-just-get-them-to-visit-your-website-ac75c83f4ef5

https://news.ycombinator.com/item?id=20387298

https://twitter.com/moreati/status/1148548799813640193

https://twitter.com/zoom_us/status/1148710712241295361

Details

Source: MITRE

Published: 2019-07-09

Updated: 2019-07-16

Type: CWE-284

Risk Information

CVSS v2.0

Base Score: 4.3

Vector: AV:N/AC:M/Au:N/C:P/I:N/A:N

Impact Score: 2.9

Exploitability Score: 8.6

Severity: MEDIUM

CVSS v3.0

Base Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Impact Score: 3.6

Exploitability Score: 2.8

Severity: MEDIUM