Hoplon InfoSec
16 Jan, 2025
Are you aware of new Tunneling Protocol Flaws? In a groundbreaking report by Top10VPN, researchers have uncovered critical vulnerabilities in widely used internet tunneling protocols. These flaws expose over 4.2 million hosts, including VPN servers and private home routers, to potential exploitation. This discovery reveals how attackers can hijack devices to perform anonymous attacks, denial-of-service (DoS) campaigns, and unauthorized access to private networks.
Tunneling protocols enable secure communication over the Internet by encapsulating one network protocol within another. These protocols facilitate virtual private network (VPN) connections, routing, and interoperability between IPv4 and IPv6 networks. However, the lack of robust authentication mechanisms in specific protocols creates opportunities for cybercriminals to exploit these systems.
The researchers identified several attack methods exploiting tunneling protocol weaknesses. These techniques highlight the dire consequences of failing to authenticate incoming packets properly.
The research revealed that over 4.26 million hosts are at risk, spanning various devices and systems, including:
The affected tunneling protocols include:
A detailed breakdown of vulnerable hosts is as follows:
Tunneling Protocol | Vulnerable Hosts | Spoofing Capable |
---|---|---|
IPIP | 530,100 | 66,288 |
IP6IP6 | 217,641 | 333 |
GRE | 1,548,251 | 219,213 |
GRE6 | 1,806 | 360 |
4in6 | 130,217 | 4,113 |
6in4 | 2,126,018 | 1,650,846 |
The vulnerabilities are widespread, affecting countries like China, France, the United States, Japan, and Brazil.
Two newly identified attack techniques—Tunneled-Temporal Lensing (TuTL) and Economic Denial of Sustainability (EDoS)—stand out for their devastating impacts:
Both methods target various devices, including consumer VPN servers, enterprise systems, and home routers.
The researchers conducted a global scan and found vulnerabilities in 218 countries. China and France host the majority of spoofing-capable devices. The analysis also revealed that two autonomous systems account for nearly half of the identified weaknesses, indicating systemic risks.
The research focused on several critical tunneling protocols:
The vulnerabilities impact various devices and systems, including:
The top ISPs affected include:
Addressing these vulnerabilities requires coordinated efforts at both host and network levels.
The study builds on previous work by researcher Livneh Yannay, who identified similar flaws in IPv4 tunneling protocols in 2020. Expanding on these findings, the latest research highlights vulnerabilities in IPv6 and additional tunneling protocols. Researchers working with CERT/CC have alerted affected parties, urging them to secure their systems.
The vulnerabilities in tunneling protocols underscore the critical need for stronger security measures in network infrastructure. By addressing these weaknesses through advanced authentication mechanisms, secure protocols, and coordinated industry efforts, organizations can protect millions of devices and maintain the integrity of global internet systems.
For more:
https://cybersecuritynews.com/new-tunneling-protocol-vulnerabilities/
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