CVE-2023-51443

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 1.10.11, when handling DTLS-SRTP for media setup, FreeSWITCH is susceptible to Denial of Service due to a race condition in the hello handshake phase of the DTLS protocol. This attack can be done continuously, thus denying new DTLS-SRTP encrypted calls during the attack. If an attacker manages to send a ClientHello DTLS message with an invalid CipherSuite (such as `TLS_NULL_WITH_NULL_NULL`) to the port on the FreeSWITCH server that is expecting packets from the caller, a DTLS error is generated. This results in the media session being torn down, which is followed by teardown at signaling (SIP) level too. Abuse of this vulnerability may lead to a massive Denial of Service on vulnerable FreeSWITCH servers for calls that rely on DTLS-SRTP. To address this vulnerability, upgrade FreeSWITCH to 1.10.11 which includes the security fix. The solution implemented is to drop all packets from addresses that have not been validated by an ICE check.
Configurations

Configuration 1 (hide)

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

History

21 Nov 2024, 08:38

Type Values Removed Values Added
CVSS v2 : unknown
v3 : 5.9
v2 : unknown
v3 : 7.5
References () http://packetstormsecurity.com/files/176393/FreeSWITCH-Denial-Of-Service.html - Exploit, Third Party Advisory, VDB Entry () http://packetstormsecurity.com/files/176393/FreeSWITCH-Denial-Of-Service.html - Exploit, Third Party Advisory, VDB Entry
References () https://github.com/signalwire/freeswitch/commit/86cbda90b84ba186e508fbc7bfae469270a97d11 - Patch () https://github.com/signalwire/freeswitch/commit/86cbda90b84ba186e508fbc7bfae469270a97d11 - Patch
References () https://github.com/signalwire/freeswitch/security/advisories/GHSA-39gv-hq72-j6m6 - Exploit, Vendor Advisory () https://github.com/signalwire/freeswitch/security/advisories/GHSA-39gv-hq72-j6m6 - Exploit, Vendor Advisory

04 Jan 2024, 16:57

Type Values Removed Values Added
CPE cpe:2.3:a:freeswitch:freeswitch:*:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown
v2 : unknown
v3 : 7.5
References () https://github.com/signalwire/freeswitch/security/advisories/GHSA-39gv-hq72-j6m6 - () https://github.com/signalwire/freeswitch/security/advisories/GHSA-39gv-hq72-j6m6 - Exploit, Vendor Advisory
References () https://github.com/signalwire/freeswitch/commit/86cbda90b84ba186e508fbc7bfae469270a97d11 - () https://github.com/signalwire/freeswitch/commit/86cbda90b84ba186e508fbc7bfae469270a97d11 - Patch

27 Dec 2023, 18:24

Type Values Removed Values Added
New CVE

Information

Published : 2023-12-27 17:15

Updated : 2024-11-21 08:38


NVD link : CVE-2023-51443

Mitre link : CVE-2023-51443

CVE.ORG link : CVE-2023-51443


JSON object : View

Products Affected

freeswitch

  • freeswitch
CWE
CWE-703

Improper Check or Handling of Exceptional Conditions