CVE-2021-41145
FreeSWITCH Unauthenticated SIP Denial of Service
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.
INFO
Published Date :
Oct. 25, 2021, 10:15 p.m.
Last Modified :
Aug. 12, 2022, 2:47 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
4.0
Exploitability Score :
3.9
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-41145.
| URL | Resource |
|---|---|
| https://github.com/signalwire/freeswitch/releases/tag/v1.10.7 | Release Notes Third Party Advisory |
| https://github.com/signalwire/freeswitch/security/advisories/GHSA-jvpq-23v4-gp3m | Exploit Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-41145 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-41145 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Reanalysis by [email protected]
Aug. 12, 2022
Action Type Old Value New Value Added CWE NIST CWE-401 -
Modified Analysis by [email protected]
Nov. 17, 2021
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 15, 2021
Action Type Old Value New Value Changed Description 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. 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. Removed Reference http://seclists.org/fulldisclosure/2021/Oct/42 [Exploit, Mailing List, Third Party Advisory] -
Initial Analysis by [email protected]
Oct. 28, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type http://seclists.org/fulldisclosure/2021/Oct/42 No Types Assigned http://seclists.org/fulldisclosure/2021/Oct/42 Exploit, Mailing List, Third Party Advisory Changed Reference Type https://github.com/signalwire/freeswitch/releases/tag/v1.10.7 No Types Assigned https://github.com/signalwire/freeswitch/releases/tag/v1.10.7 Release Notes, Third Party Advisory Changed Reference Type https://github.com/signalwire/freeswitch/security/advisories/GHSA-jvpq-23v4-gp3m No Types Assigned https://github.com/signalwire/freeswitch/security/advisories/GHSA-jvpq-23v4-gp3m Exploit, Third Party Advisory Added CPE Configuration OR *cpe:2.3:a:freeswitch:freeswitch:*:*:*:*:*:*:*:* versions up to (excluding) 1.10.7 -
CVE Modified by [email protected]
Oct. 26, 2021
Action Type Old Value New Value Added Reference http://seclists.org/fulldisclosure/2021/Oct/42 [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-41145 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-41145
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.12 }} 0.02%
score
0.45956
percentile