Remote Code Execution Vulnerability in FreePBX Rest Phone Apps
CVE-2021-45461

9.8CRITICAL

Key Information:

Vendor

Sangoma

Status
Restapps
Vendor
CVE Published:
22 December 2021

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2021-45461?

A serious vulnerability exists in FreePBX's Rest Phone Apps, specifically in versions 15.0.19.87, 15.0.19.88, 16.0.18.40, and 16.0.18.41. This flaw allows remote attackers to execute arbitrary code on affected systems. The vulnerability was actively exploited in the wild as of December 2021, underscoring the need for users to update to fixed versions 15.0.20 and 16.0.19 to mitigate potential security risks.

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2021-45461 - Proof of Concept

References

https://community.freepbx.org/t/0-day-freepbx-exploit/80092
x_refsource_MISC
https://community.freepbx.org/t/security-issue-potential-...
x_refsource_CONFIRM
https://wiki.freepbx.org/display/FOP/2021-12-21+SECURITY%...
x_refsource_CONFIRM

EPSS Score

6% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.