CVE-2021-41145

High

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.

SeverityHigh

CVSS8.6

Exploit probability—

ProductFreeswitch

PublishedOct 25, 2021

First seenOct 25, 2021

Weakness typeCWE-400Uncontrolled resource consumption

How to fix

Update

freeswitch freeswitch1.10.7 or later

Affected products

Product	Affected versions	Fixed in
freeswitch freeswitch	v < 1.10.7	1.10.7

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