CVE-2023-36672
low-risk
Published 2023-08-09
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 traffic to the local network is sent in plaintext outside the VPN tunnel even if the local network is using a non-RFC1918 IP subnet. This allows an adversary to trick the victim into sending arbitrary IP traffic in plaintext outside the VPN tunnel. NOTE: the tunnelcrack.mathyvanhoef.com website uses this CVE ID to refer more generally to "LocalNet attack resulting in leakage of traffic in plaintext" rather than to only Clario.
Do I need to act?
-
0.03% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.7/10
Medium
ADJACENT_NETWORK
/ LOW complexity
Affected Products (1)
Vpn
Affected Vendors
References (8)
Product
https://clario.co/vpn-for-mac/
Third Party Advisory
https://mullvad.net/de/blog/2023/8/9/response-to-tunnelcrack-vulnerability-discl...
Product
https://clario.co/vpn-for-mac/
Third Party Advisory
https://mullvad.net/de/blog/2023/8/9/response-to-tunnelcrack-vulnerability-discl...
24
/ 100
low-risk
Severity
19/34 · Moderate
Exploitability
0/34 · Minimal
Exposure
5/34 · Minimal