CVE-2021-37624

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.
Configurations

Configuration 1 (hide)

cpe:2.3:a:freeswitch:freeswitch:*:*:*:*:*:*:*:*

History

21 Nov 2024, 06:15

Type Values Removed Values Added
References () http://packetstormsecurity.com/files/164628/FreeSWITCH-1.10.6-Missing-SIP-MESSAGE-Authentication.html - Exploit, Third Party Advisory, VDB Entry () http://packetstormsecurity.com/files/164628/FreeSWITCH-1.10.6-Missing-SIP-MESSAGE-Authentication.html - Exploit, Third Party Advisory, VDB Entry
References () http://seclists.org/fulldisclosure/2021/Oct/44 - Exploit, Mailing List, Third Party Advisory () http://seclists.org/fulldisclosure/2021/Oct/44 - Exploit, Mailing List, Third Party Advisory
References () http://www.openwall.com/lists/oss-security/2021/10/25/6 - Mailing List, Third Party Advisory () http://www.openwall.com/lists/oss-security/2021/10/25/6 - Mailing List, Third Party Advisory
References () https://github.com/signalwire/freeswitch/releases/tag/v1.10.7 - Third Party Advisory () https://github.com/signalwire/freeswitch/releases/tag/v1.10.7 - Third Party Advisory
References () https://github.com/signalwire/freeswitch/security/advisories/GHSA-mjcm-q9h8-9xv3 - Third Party Advisory () https://github.com/signalwire/freeswitch/security/advisories/GHSA-mjcm-q9h8-9xv3 - Third Party Advisory

Information

Published : 2021-10-25 16:15

Updated : 2024-11-21 06:15


NVD link : CVE-2021-37624

Mitre link : CVE-2021-37624

CVE.ORG link : CVE-2021-37624


JSON object : View

Products Affected

freeswitch

  • freeswitch
CWE
CWE-287

Improper Authentication

CWE-306

Missing Authentication for Critical Function