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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2024-3661 Detail

Description

DHCP can add routes to a client’s routing table via the classless static route option (121). VPN-based security solutions that rely on routes to redirect traffic can be forced to leak traffic over the physical interface. An attacker on the same local network can read, disrupt, or possibly modify network traffic that was expected to be protected by the VPN.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://arstechnica.com/security/2024/05/novel-attack-against-virtually-all-vpn-apps-neuters-their-entire-purpose/ Exploit  Press/Media Coverage 
https://arstechnica.com/security/2024/05/novel-attack-against-virtually-all-vpn-apps-neuters-their-entire-purpose/ Press/Media Coverage 
https://bst.cisco.com/quickview/bug/CSCwk05814 Third Party Advisory 
https://bst.cisco.com/quickview/bug/CSCwk05814 Vendor Advisory 
https://datatracker.ietf.org/doc/html/rfc2131#section-7 Related 
https://datatracker.ietf.org/doc/html/rfc2131#section-7 Related 
https://datatracker.ietf.org/doc/html/rfc3442#section-7 Related 
https://datatracker.ietf.org/doc/html/rfc3442#section-7 Related 
https://fortiguard.fortinet.com/psirt/FG-IR-24-170 Vendor Advisory 
https://fortiguard.fortinet.com/psirt/FG-IR-24-170 Vendor Advisory 
https://issuetracker.google.com/issues/263721377 Issue Tracking 
https://issuetracker.google.com/issues/263721377 Issue Tracking 
https://krebsonsecurity.com/2024/05/why-your-vpn-may-not-be-as-secure-as-it-claims/ Exploit  Press/Media Coverage 
https://krebsonsecurity.com/2024/05/why-your-vpn-may-not-be-as-secure-as-it-claims/ Press/Media Coverage 
https://lowendtalk.com/discussion/188857/a-rogue-dhcp-server-within-your-network-can-and-will-hijack-your-vpn-traffic Issue Tracking 
https://lowendtalk.com/discussion/188857/a-rogue-dhcp-server-within-your-network-can-and-will-hijack-your-vpn-traffic Issue Tracking 
https://mullvad.net/en/blog/evaluating-the-impact-of-tunnelvision Third Party Advisory 
https://mullvad.net/en/blog/evaluating-the-impact-of-tunnelvision Third Party Advisory 
https://my.f5.com/manage/s/article/K000139553 Vendor Advisory 
https://my.f5.com/manage/s/article/K000139553 Vendor Advisory 
https://news.ycombinator.com/item?id=40279632 Issue Tracking 
https://news.ycombinator.com/item?id=40279632 Issue Tracking 
https://news.ycombinator.com/item?id=40284111 Issue Tracking 
https://news.ycombinator.com/item?id=40284111 Issue Tracking 
https://security.paloaltonetworks.com/CVE-2024-3661 Vendor Advisory 
https://security.paloaltonetworks.com/CVE-2024-3661 Vendor Advisory 
https://support.citrix.com/article/CTX677069/cloud-software-group-security-advisory-for-cve20243661 Vendor Advisory 
https://support.citrix.com/article/CTX677069/cloud-software-group-security-advisory-for-cve20243661 Vendor Advisory 
https://tunnelvisionbug.com/ Exploit  Third Party Advisory 
https://tunnelvisionbug.com/ Exploit  Third Party Advisory 
https://www.agwa.name/blog/post/hardening_openvpn_for_def_con Related 
https://www.agwa.name/blog/post/hardening_openvpn_for_def_con Related 
https://www.leviathansecurity.com/research/tunnelvision Third Party Advisory 
https://www.leviathansecurity.com/research/tunnelvision Third Party Advisory 
https://www.theregister.com/2024/05/07/vpn_tunnelvision_dhcp/ Exploit  Press/Media Coverage 
https://www.theregister.com/2024/05/07/vpn_tunnelvision_dhcp/ Press/Media Coverage 
https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2024-00009 Mitigation  Vendor Advisory 
https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2024-00009 Mitigation  Third Party Advisory 
https://www.zscaler.com/blogs/security-research/cve-2024-3661-k-tunnelvision-exposes-vpn-bypass-vulnerability Exploit  Vendor Advisory 
https://www.zscaler.com/blogs/security-research/cve-2024-3661-k-tunnelvision-exposes-vpn-bypass-vulnerability Exploit  Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-306 Missing Authentication for Critical Function cwe source acceptance level NIST   Cybersecurity and Infrastructure Security Agency (CISA) U.S. Civilian Government  
CWE-501 Trust Boundary Violation Cybersecurity and Infrastructure Security Agency (CISA) U.S. Civilian Government  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

11 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2024-3661
NVD Published Date:
05/06/2024
NVD Last Modified:
01/15/2025
Source:
Cybersecurity and Infrastructure Security Agency (CISA) U.S. Civilian Government