Critical severity · published Dec 22, 2021
CVE-2021-45461
FreePBX, when restapps (aka Rest Phone Apps) 15.0.19.87, 15.0.19.88, 16.0.18.40, or 16.0.18.41 is installed, allows remote attackers to execute arbitrary code, as exploited in the…
9.8
CVSS
21.5%
EPSS
No
On KEV
Description
FreePBX, when restapps (aka Rest Phone Apps) 15.0.19.87, 15.0.19.88, 16.0.18.40, or 16.0.18.41 is installed, allows remote attackers to execute arbitrary code, as exploited in the wild in December 2021. The fixed versions are 15.0.20 and 16.0.19.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)21.5% · higher than 98% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RE
Restapps · Sangoma
15.0.19.87; 15.0.19.88; 16.0.18.40; 16.0.18.41 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-45461
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-45461
Exploit
https://community.freepbx.org/t/0-day-freepbx-exploit/80092
Vendor Advisory
https://community.freepbx.org/t/security-issue-potential-rest-phone-apps-rce/80109
Vendor Advisory
https://wiki.freepbx.org/display/FOP/2021-12-21+SECURITY%3A+Potential+Rest+Phone+Apps+RCE
More from Restapps
9.8
CVE-2020-10666
The restapps (aka Rest Phone apps) module for Sangoma FreePBX and PBXact 13, 14, and 15 through 15.0.19.2 allows remote code execution via a URL variable to an AMI command