CVE-2021-37624
FreeSWITCH SIP Message Authentication Bypass
Description
FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation that runs on any commodity hardware. Prior to version 1.10.7, FreeSWITCH does not authenticate SIP MESSAGE requests, leading to spam and message spoofing. By default, SIP requests of the type MESSAGE (RFC 3428) are not authenticated in the affected versions of FreeSWITCH. MESSAGE requests are relayed to SIP user agents registered with the FreeSWITCH server without requiring any authentication. Although this behaviour can be changed by setting the `auth-messages` parameter to `true`, it is not the default setting. Abuse of this security issue allows attackers to send SIP MESSAGE messages to any SIP user agent that is registered with the server without requiring authentication. Additionally, since no authentication is required, chat messages can be spoofed to appear to come from trusted entities. Therefore, abuse can lead to spam and enable social engineering, phishing and similar attacks. This issue is patched in version 1.10.7. Maintainers recommend that this SIP message type is authenticated by default so that FreeSWITCH administrators do not need to be explicitly set the `auth-messages` parameter. When following such a recommendation, a new parameter can be introduced to explicitly disable authentication.
INFO
Published Date :
Oct. 25, 2021, 4:15 p.m.
Last Modified :
Oct. 27, 2022, 4:36 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2021-37624 has a 4 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-37624.
| URL | Resource |
|---|---|
| http://packetstormsecurity.com/files/164628/FreeSWITCH-1.10.6-Missing-SIP-MESSAGE-Authentication.html | Exploit Third Party Advisory VDB Entry |
| http://seclists.org/fulldisclosure/2021/Oct/44 | Exploit Mailing List Third Party Advisory |
| http://www.openwall.com/lists/oss-security/2021/10/25/6 | Mailing List Third Party Advisory |
| https://github.com/signalwire/freeswitch/releases/tag/v1.10.7 | Third Party Advisory |
| https://github.com/signalwire/freeswitch/security/advisories/GHSA-mjcm-q9h8-9xv3 | Third Party Advisory |
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).
None
A FreeSWITCH specific scanning and exploitation toolkit for CVE-2021-37624 and CVE-2021-41157.
freeswitch security unauthenticated-requests exploitation-framework voip-telephony-providers sip-security
Go
平常看到好的渗透hacking工具和多领域效率工具的集合
web hacking awesome-list hacker hacking-tool kali-scripts hacking-tools pentesting-tools pentest-scripts bounty-hunters bug-bounty bugbounty bugbounty-tool
a list of awesome resources related to security and hacking of VoIP, WebRTC and VoLTE
awesome-lists voip-security hacking-voip sip-security communications-hacking webrtc volte awesome hacking security fuzzing bug-bounty
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-37624 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-37624 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 [email protected]
May. 14, 2024
Action Type Old Value New Value -
Reanalysis by [email protected]
Oct. 27, 2022
Action Type Old Value New Value Removed CWE NIST CWE-287 Added CWE NIST CWE-306 -
Initial Analysis by [email protected]
Nov. 02, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:P/A:N) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Changed Reference Type http://packetstormsecurity.com/files/164628/FreeSWITCH-1.10.6-Missing-SIP-MESSAGE-Authentication.html No Types Assigned http://packetstormsecurity.com/files/164628/FreeSWITCH-1.10.6-Missing-SIP-MESSAGE-Authentication.html Exploit, Third Party Advisory, VDB Entry Changed Reference Type http://seclists.org/fulldisclosure/2021/Oct/44 No Types Assigned http://seclists.org/fulldisclosure/2021/Oct/44 Exploit, Mailing List, Third Party Advisory Changed Reference Type http://www.openwall.com/lists/oss-security/2021/10/25/6 No Types Assigned http://www.openwall.com/lists/oss-security/2021/10/25/6 Mailing List, Third Party Advisory Changed Reference Type https://github.com/signalwire/freeswitch/releases/tag/v1.10.7 No Types Assigned https://github.com/signalwire/freeswitch/releases/tag/v1.10.7 Third Party Advisory Changed Reference Type https://github.com/signalwire/freeswitch/security/advisories/GHSA-mjcm-q9h8-9xv3 No Types Assigned https://github.com/signalwire/freeswitch/security/advisories/GHSA-mjcm-q9h8-9xv3 Third Party Advisory Added CWE NIST CWE-287 Added CPE Configuration OR *cpe:2.3:a:freeswitch:freeswitch:*:*:*:*:*:*:*:* versions up to (excluding) 1.10.7 -
CVE Modified by [email protected]
Oct. 26, 2021
Action Type Old Value New Value Added Reference http://seclists.org/fulldisclosure/2021/Oct/44 [No Types Assigned] Added Reference http://packetstormsecurity.com/files/164628/FreeSWITCH-1.10.6-Missing-SIP-MESSAGE-Authentication.html [No Types Assigned] -
CVE Modified by [email protected]
Oct. 25, 2021
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2021/10/25/6 [No Types Assigned] -
CVE Modified by [email protected]
Oct. 25, 2021
Action Type Old Value New Value Changed Description FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation that runs on any commodity hardware. Prior to version 1.10.7, FreeSWITCH does not authenticate SIP MESSAGE requests, leading to spam and message spoofing. By default, SIP requests of the type MESSAGE (RFC 3428) are not authenticated in the affected versions of FreeSWITCH. MESSAGE requests are relayed to SIP user agents registered with the FreeSWITCH server without requiring any authentication. Although this behaviour can be changed by setting the `auth-messages` parameter to `true`, it is not the default setting. Abuse of this security issue allows attackers to send SIP MESSAGE messages to any SIP user agent that is registered with the server without requiring authentication. Additionally, since no authentication is required, chat messages can be spoofed to appear to come from trusted entities. Therefore, abuse can lead to spam and enable social engineering, phishing and similar attacks. This issue is patched in version 1.10.7. Maintainers recommend that this SIP message type is authenticated by default so that FreeSWITCH administrators do not need to be explicitly set the `auth-messages` parameter. When following such a recommendation, a new parameter can be introduced to explicitly disable authentication. FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation that runs on any commodity hardware. Prior to version 1.10.7, FreeSWITCH does not authenticate SIP MESSAGE requests, leading to spam and message spoofing. By default, SIP requests of the type MESSAGE (RFC 3428) are not authenticated in the affected versions of FreeSWITCH. MESSAGE requests are relayed to SIP user agents registered with the FreeSWITCH server without requiring any authentication. Although this behaviour can be changed by setting the `auth-messages` parameter to `true`, it is not the default setting. Abuse of this security issue allows attackers to send SIP MESSAGE messages to any SIP user agent that is registered with the server without requiring authentication. Additionally, since no authentication is required, chat messages can be spoofed to appear to come from trusted entities. Therefore, abuse can lead to spam and enable social engineering, phishing and similar attacks. This issue is patched in version 1.10.7. Maintainers recommend that this SIP message type is authenticated by default so that FreeSWITCH administrators do not need to be explicitly set the `auth-messages` parameter. When following such a recommendation, a new parameter can be introduced to explicitly disable authentication.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-37624 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-2021-37624
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.20 }} -0.03%
score
0.56967
percentile