9.8
CRITICAL
CVE-2021-45461
FreePBX Remote Code Execution Vulnerability
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.

INFO

Published Date :

Dec. 22, 2021, 7:15 p.m.

Last Modified :

Nov. 21, 2024, 6:32 a.m.

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2021-45461 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Sangoma freepbx
2 Sangoma restapps
3 Sangoma pbxact
References to Advisories, Solutions, and Tools

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-45461 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-45461 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://community.freepbx.org/t/0-day-freepbx-exploit/80092
    Added Reference https://community.freepbx.org/t/security-issue-potential-rest-phone-apps-rce/80109
    Added Reference https://wiki.freepbx.org/display/FOP/2021-12-21+SECURITY%3A+Potential+Rest+Phone+Apps+RCE
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Initial Analysis by [email protected]

    Jan. 05, 2022

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://community.freepbx.org/t/0-day-freepbx-exploit/80092 No Types Assigned https://community.freepbx.org/t/0-day-freepbx-exploit/80092 Exploit, Issue Tracking, Vendor Advisory
    Changed Reference Type https://community.freepbx.org/t/security-issue-potential-rest-phone-apps-rce/80109 No Types Assigned https://community.freepbx.org/t/security-issue-potential-rest-phone-apps-rce/80109 Vendor Advisory
    Changed Reference Type https://wiki.freepbx.org/display/FOP/2021-12-21+SECURITY%3A+Potential+Rest+Phone+Apps+RCE No Types Assigned https://wiki.freepbx.org/display/FOP/2021-12-21+SECURITY%3A+Potential+Rest+Phone+Apps+RCE Vendor Advisory
    Added CWE NIST NVD-CWE-noinfo
    Added CPE Configuration AND OR *cpe:2.3:a:sangoma:restapps:15.0.19.87:*:*:*:*:*:*:* *cpe:2.3:a:sangoma:restapps:15.0.19.88:*:*:*:*:*:*:* *cpe:2.3:a:sangoma:restapps:16.0.18.40:*:*:*:*:*:*:* *cpe:2.3:a:sangoma:restapps:16.0.18.41:*:*:*:*:*:*:* OR cpe:2.3:a:sangoma:freepbx:-:*:*:*:*:*:*:* cpe:2.3:a:sangoma:pbxact:-:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-45461 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-45461 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

2.01 }} 0.10%

score

0.88570

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability