CVE-2021-41145 Information

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. FreeSWITCH prior to version 1.10.7 is susceptible to Denial of Service via SIP flooding. When flooding FreeSWITCH with SIP messages it was observed that after a number of seconds the process was killed by the operating system due to memory exhaustion. By abusing this vulnerability an attacker is able to crash any FreeSWITCH instance by flooding it with SIP messages leading to Denial of Service. The attack does not require authentication and can be carried out over UDP TCP or TLS. This issue was patched in version 1.10.7.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

https://github.com/signalwire/freeswitch/security/advisories/GHSA-jvpq-23v4-gp3m https://github.com/signalwire/freeswitch/releases/tag/v1.10.7

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5