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AUSCERT External Security Bulletin Redistribution
ESB-2021.2138
Advisory (icsa-21-166-01) ThroughTek P2P SDK
16 June 2021
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AusCERT Security Bulletin Summary
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Product: ThroughTek P2P SDK
Publisher: ICS-CERT
Operating System: Network Appliance
Impact/Access: Access Confidential Data -- Remote/Unauthenticated
Resolution: Mitigation
CVE Names: CVE-2021-32934
Original Bulletin:
https://us-cert.cisa.gov/ics/advisories/icsa-21-166-01
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ICS Advisory (ICSA-21-166-01)
ThroughTek P2P SDK
Original release date: June 15, 2021
Legal Notice
All information products included in https://us-cert.cisa.gov/ics are provided
"as is" for informational purposes only. The Department of Homeland Security
(DHS) does not provide any warranties of any kind regarding any information
contained within. DHS does not endorse any commercial product or service,
referenced in this product or otherwise. Further dissemination of this product
is governed by the Traffic Light Protocol (TLP) marking in the header. For more
information about TLP, see https://us-cert.cisa.gov/tlp/ .
1. EXECUTIVE SUMMARY
o CVSS v3 9.1
o ATTENTION: Exploitable remotely/low attack complexity
o Vendor: ThroughTek
o Equipment: P2P SDK
o Vulnerability: Cleartext Transmission of Sensitive Information
2. RISK EVALUATION
ThroughTek supplies multiple original equipment manufacturers of IP cameras
with P2P connections as part of its cloud platform. Successful exploitation of
this vulnerability could permit unauthorized access to sensitive information,
such as camera audio/video feeds.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following versions of P2P Software Development Kit (SDK) are affected:
o Versions 3.1.5 and prior
o SDK versions with nossl tag
o Device firmware that does not use AuthKey for IOTC connection
o Device firmware using the AVAPI module without enabling DTLS mechanism
o Device firmware using P2PTunnel or RDT module
3.2 VULNERABILITY OVERVIEW
3.2.1 CLEARTEXT TRANSMISSION OF SENSITIVE INFORMATION CWE-319
The affected ThroughTek P2P products do not sufficiently protect data
transferred between the local device and ThroughTek servers. This can allow an
attacker to access sensitive information, such as camera feeds.
CVE-2021-32934 has been assigned to this vulnerability. A CVSS v3 base score of
9.1 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:N/S:U/
C:H/I:H/A:N ).
3.3 BACKGROUND
o CRITICAL INFRASTRUCTURE SECTORS: Communications
o COUNTRIES/AREAS DEPLOYED: Worldwide
o COMPANY HEADQUARTERS LOCATION: Taiwan
3.4 RESEARCHER
Nozomi Networks reported this vulnerability to CISA.
4. MITIGATIONS
ThroughTek recommends original equipment manufacturers to implement the
following mitigations:
o If SDK is Version 3.1.10 and above, enable authkey and DTLS.
o If SDK is any version prior to 3.1.10, upgrade library to v3.3.1.0 or
v3.4.2.0 and enable authkey/DTLS.
Additional information can be found in ThroughTek's advisory .
CISA recommends users take defensive measures to minimize the risk of
exploitation of this vulnerability. Specifically, users should:
o Minimize network exposure for all control system devices and/or systems,
and ensure that they are not accessible from the Internet .
o Locate control system networks and remote devices behind firewalls, and
isolate them from the business network.
o When remote access is required, use secure methods, such as Virtual Private
Networks (VPNs), recognizing VPNs may have vulnerabilities and should be
updated to the most current version available. Also recognize VPN is only
as secure as its connected devices.
CISA reminds organizations to perform proper impact analysis and risk
assessment prior to deploying defensive measures.
CISA also provides a section for control systems security recommended practices
on the ICS webpage on us-cert.cisa.gov . Several recommended practices are
available for reading and download, including Improving Industrial Control
Systems Cybersecurity with Defense-in-Depth Strategies .
Additional mitigation guidance and recommended practices are publicly available
on the ICS webpage on us-cert.cisa.gov in the Technical Information Paper,
ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation
Strategies .
Organizations observing any suspected malicious activity should follow their
established internal procedures and report their findings to CISA for tracking
and correlation against other incidents.
No known public exploits specifically target this vulnerability.
For any questions related to this report, please contact the CISA at:
Email: CISAservicedesk@cisa.dhs.gov
Toll Free: 1-888-282-0870
CISA continuously strives to improve its products and services. You can help by
choosing one of the links below to provide feedback about this product.
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