High severity · published Jun 7, 2022
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…
8.8
CVSS
2.1%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.1% · higher than 82% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
All versions, or not specified · source: NVD
PS
Phone System Firmware · 3cx
16.0.0.1570 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-9971
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-9971
Third Party Advisory
https://www.gosecure.net/blog
Exploit
https://www.gosecure.net/blog/2022/05/31/security-advisory-multiple-vulnerabilities-impact-3cx-phone-system/
Third Party Advisory
https://www.securusglobal.com/community/2014/03/17/how-i-got-root-with-sudo/
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