Privilege escalation in 3cx Phone System
CVE-2019-9971
PhoneSystem Terminal in 3CX Phone System (Debian based installation) 16.0.0.1570 allows an attacker to gain root privileges by using sudo with the tcpdump command, without a password. This occurs because the -z (aka postrotate-command) option to tcpdump can be unsafe when used in conjunction with sudo.
Vulnerability class: Privilege Escalation
EPSS: 0.016 (72.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- 3cx Phone_system
- 3cx Phone_system_firmware — versions 16.0.0.1570
- Debian Debian_linux
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2019-9971?
- CVE-2019-9971 is a high-severity vulnerability in 3cx Phone System, classified under Improper Privilege Management. CVSS score: 8.8/10. Published 2022-06-07.
- How severe is CVE-2019-9971?
- High severity. CVSS v3 base score is 8.8 out of 10.