CVE-2019-9971: 3cx phone_system_firmware Improper Privilege Management
Vulnerability summary
CVE-2019-9971 is a high (CVSS 9.0) Improper Privilege Management vulnerability in 3cx phone_system_firmware. EPSS estimates a 1.69% chance of exploitation in the next 30 days, higher than 76.8% of scored vulnerabilities. 1 public exploit is recorded.
Timeline
- 07-06-2022PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
2 scores · 1 source · 2 versionsEPSS trend
Probability
1.69%
Chance of exploitation in the next 30 days
Percentile
77%
Versus all other CVEs
30-day change
No change 0.00 pp
From 1.69% on 22-09-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
1 foundExploit Reference (gosecure.net)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
3cx1 product
- phone_system_firmware16.0.0.1570
Debian1 product
2 vendors · 2 products
References
3 links- www.securusglobal.com/community/2014/03/17/how-i-got-root-with-sudo/X Refsource MISCThird Party Advisory
- www.gosecure.net/blog/2022/05/31/security-advisory-multiple-vulnerabilities-impact-3cx-phone-system/X Refsource MISCExploitThird Party Advisory