CVE-2021-41145

Public Exploit
FreeSWITCH susceptible to Denial of Service via SIP flooding

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.

Categories

8.6
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.95% Top 25%
Third-Party Advisory github.com Third-Party Advisory github.com
Affected: signalwire freeswitch
Published at:
Updated at:

References

Link Tags
https://github.com/signalwire/freeswitch/releases/tag/v1.10.7 third party advisory release notes
https://github.com/signalwire/freeswitch/security/advisories/GHSA-jvpq-23v4-gp3m third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2021-41145?
CVE-2021-41145 has been scored as a high severity vulnerability.
How to fix CVE-2021-41145?
To fix CVE-2021-41145, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-41145 being actively exploited in the wild?
It is possible that CVE-2021-41145 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-41145?
CVE-2021-41145 affects signalwire freeswitch.
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