CVE-2021-41157
FreeSWITCH Unauthenticated SIP SUBSCRIBE Vulnerability
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. By default, SIP requests of the type SUBSCRIBE are not authenticated in the affected versions of FreeSWITCH. Abuse of this security issue allows attackers to subscribe to user agent event notifications without the need to authenticate. This abuse poses privacy concerns and might lead to social engineering or similar attacks. For example, attackers may be able to monitor the status of target SIP extensions. Although this issue was fixed in version v1.10.6, installations upgraded to the fixed version of FreeSWITCH from an older version, may still be vulnerable if the configuration is not updated accordingly. Software upgrades do not update the configuration by default. SIP SUBSCRIBE messages should be authenticated by default so that FreeSWITCH administrators do not need to explicitly set the `auth-subscriptions` parameter. When following such a recommendation, a new parameter can be introduced to explicitly disable authentication.
INFO
Published Date :
Oct. 26, 2021, 2:15 p.m.
Last Modified :
Aug. 9, 2022, 1:41 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
1.4
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2021-41157 has a 3 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
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-2021-41157.
| URL | Resource |
|---|---|
| http://seclists.org/fulldisclosure/2021/Oct/41 | Mailing List Third Party Advisory |
| https://github.com/signalwire/freeswitch/commit/b21dd4e7f3a6f1d5f7be3ea500a319a5bc11db9e | Patch Third Party Advisory |
| https://github.com/signalwire/freeswitch/releases/tag/v1.10.6 | Release Notes Third Party Advisory |
| https://github.com/signalwire/freeswitch/security/advisories/GHSA-g7xg-7c54-rmpj | 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).
A FreeSWITCH specific scanning and exploitation toolkit for CVE-2021-37624 and CVE-2021-41157.
freeswitch security unauthenticated-requests exploitation-framework voip-telephony-providers sip-security
Go
平常看到好的渗透hacking工具和多领域效率工具的集合
web hacking awesome-list hacker hacking-tool kali-scripts hacking-tools pentesting-tools pentest-scripts bounty-hunters bug-bounty bugbounty bugbounty-tool
a list of awesome resources related to security and hacking of VoIP, WebRTC and VoLTE
awesome-lists voip-security hacking-voip sip-security communications-hacking webrtc volte awesome hacking security fuzzing bug-bounty
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-41157 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-41157 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. 09, 2022
Action Type Old Value New Value Added CWE NIST CWE-306 -
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:P/I:N/A:N) Changed Reference Type http://seclists.org/fulldisclosure/2021/Oct/41 No Types Assigned http://seclists.org/fulldisclosure/2021/Oct/41 Mailing List, Third Party Advisory Changed Reference Type https://github.com/signalwire/freeswitch/commit/b21dd4e7f3a6f1d5f7be3ea500a319a5bc11db9e No Types Assigned https://github.com/signalwire/freeswitch/commit/b21dd4e7f3a6f1d5f7be3ea500a319a5bc11db9e Patch, Third Party Advisory Changed Reference Type https://github.com/signalwire/freeswitch/releases/tag/v1.10.6 No Types Assigned https://github.com/signalwire/freeswitch/releases/tag/v1.10.6 Release Notes, Third Party Advisory Changed Reference Type https://github.com/signalwire/freeswitch/security/advisories/GHSA-g7xg-7c54-rmpj No Types Assigned https://github.com/signalwire/freeswitch/security/advisories/GHSA-g7xg-7c54-rmpj Exploit, Third Party Advisory Added CPE Configuration OR *cpe:2.3:a:freeswitch:freeswitch:*:*:*:*:*:*:*:* versions up to (excluding) 1.10.6 -
CVE Modified by [email protected]
Oct. 26, 2021
Action Type Old Value New Value Added Reference http://seclists.org/fulldisclosure/2021/Oct/41 [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-2021-41157 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-2021-41157
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.12 }} 0.01%
score
0.46028
percentile