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CVE-2023-36671

6.3 · MEDIUM

An issue was discovered in the Clario VPN client through 5.9.1.1662 for macOS.

Published Aug 9, 2023CWE-319EPSS 0.25%

Overview

CVE-2023-36671 is a medium-severity vulnerability. It was published on August 9, 2023 and has a CVSS 3.1 base score of 6.3 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.3, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

An issue was discovered in the Clario VPN client through 5.9.1.1662 for macOS. The VPN client insecurely configures the operating system such that all IP traffic to the VPN server's IP address is sent in plaintext outside the VPN tunnel even if this traffic is not generated by the VPN client. This allows an adversary to trick the victim into sending plaintext traffic to the VPN server's IP address and thereby deanonymize the victim. NOTE: the tunnelcrack.mathyvanhoef.com website uses this CVE ID to refer more generally to "ServerIP attack for only traffic to the real IP address of the VPN server" rather than to only Clario.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refclario.co/vpn-for-mac/Refpsirt.global.sonicwall.com/vuln-detail/SNWLID-2023-0015Reftunnelcrack.mathyvanhoef.com/details.htmlRefclario.co/vpn-for-mac/Refpsirt.global.sonicwall.com/vuln-detail/SNWLID-2023-0015Reftunnelcrack.mathyvanhoef.com/details.html

How CyberStrike helps

Frequently asked questions

What is CVE-2023-36671?

CVE-2023-36671 is a medium-severity vulnerability. It was published on August 9, 2023 and has a CVSS 3.1 base score of 6.3 (MEDIUM).

How severe is CVE-2023-36671?

This vulnerability has a CVSS 3.1 base score of 6.3, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2023-36671?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-36671?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-36671 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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