Medium severity · published Jul 9, 2019
CVE-2019-13450
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
6.5
CVSS
3.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.5% · higher than 89% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RI
Ringcentral · Ringcentral
7.0.136380.0312 · source: NVD
ZO
Zoom · Zoom
through 4.4.4 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-13450
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-13450
Third Party Advisory
http://www.securityfocus.com/bid/109082
Vendor Advisory
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/
Exploit
https://bugs.chromium.org/p/chromium/issues/detail?id=951540
medium.com
https://medium.com/%40jonathan.leitschuh/zoom-zero-day-4-million-webcams-maybe-an-rce-just-get-them-to-visit-your-website-ac75c83f4ef5
Issue Tracking
https://news.ycombinator.com/item?id=20387298