PT-2020-9987 · Zoom · Zoom Call Recording

Published 2020-04-14 · Updated 2021-08-27 · CVE-2019-18822

Positive Technologies (AI Summary)

CVSS v2.0

9.0

High

Base vector

AV:N/AC:L/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions: ZOOM Call Recording version 6.3.1

Description: A privilege escalation issue allows the user account, which runs the program by default under the callrec account, to elevate privileges to root by abusing the callrec-rs@.service. This service starts the /opt/callrec/bin/rs binary with root privileges, and since this binary is owned by callrec, it can be replaced by a Trojan horse.

Recommendations: For ZOOM Call Recording version 6.3.1, consider restricting access to the callrec-rs@.service to prevent abuse and elevation of privileges to root. As a temporary workaround, monitor the /opt/callrec/bin/rs binary for any unauthorized modifications. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Improper Privilege Management

Weakness Enumeration

CWE-269

Related Identifiers

CVE-2019-18822

Affected Products

Zoom Call Recording

References · 6

• 🔥 https://github.com/DrunkenShells/Disclosures/tree/master/CVE-2019-18822-PrivEscal-ZoomCallRecording · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2019-18822 · Security Note
• https://osv.dev/vulnerability/CVE-2019-18822 · Vendor Advisory
• https://zoomint.com/solutions/call-recording · Note
• https://t.me/cvenotify/2714 · Telegram Post
• https://t.me/cibsecurity/11235 · Telegram Post