What is CVE-2023-36671?

CVE-2023-36671 is a medium-severity vulnerability in Clario Vpn, classified under Cleartext Transmission of Sensitive Information. CVSS score: 6.3/10. Published 2023-08-09.

How severe is CVE-2023-36671?

Medium severity. CVSS v3 base score is 6.3 out of 10.

Vulnerability in Clario Vpn

CVE-2023-36671

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.

EPSS: 0.003 (23.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N.

Affected products

Clario Vpn
N/a — versions n/a

Weakness classification (CWE)

CWE-319 — Cleartext Transmission of Sensitive Information

References

cve@mitre.org (Product)
cve@mitre.org (Exploit, Third Party Advisory)
cve@mitre.org

Frequently asked questions

What is CVE-2023-36671?: CVE-2023-36671 is a medium-severity vulnerability in Clario Vpn, classified under Cleartext Transmission of Sensitive Information. CVSS score: 6.3/10. Published 2023-08-09.
How severe is CVE-2023-36671?: Medium severity. CVSS v3 base score is 6.3 out of 10.