High severity8.8NVD Advisory· Published Jun 7, 2022· Updated Jun 17, 2026
CVE-2019-9971
CVE-2019-9971
Description
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.
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Affected products
1- 3CX/3CX Phone Systemdescription
Patches
Vulnerability mechanics
References
3- www.gosecure.net/blog/2022/05/31/security-advisory-multiple-vulnerabilities-impact-3cx-phone-system/nvdExploitThird Party Advisory
- www.gosecure.net/blognvdThird Party Advisory
- www.securusglobal.com/community/2014/03/17/how-i-got-root-with-sudo/nvdThird Party Advisory
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