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.
References (3)
Core 3
Core References
Product
https://clario.co/vpn-for-mac/
Exploit, Third Party Advisory
https://tunnelcrack.mathyvanhoef.com/details.html
Various Sources
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2023-0015
Scores
CVSS v3
6.3
EPSS
0.0031
EPSS Percentile
22.6%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
total
Details
CWE
CWE-319
Status
published
Products (1)
clario/vpn
< 5.9.1.1662
Published
Aug 09, 2023
Tracked Since
Feb 18, 2026