CVE-2023-36671 Information disclosure in n/a
The Clario VPN client leaks plaintext traffic to the VPN server's IP, allowing attackers to deanonymize users by tricking them into sending data outside the tunnel.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2023-36671?
CVE-2023-36671 is a medium-severity vulnerability in n/a, published on 9 Aug 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-319
Which versions are affected by CVE-2023-36671?
It affects 1 product.
Products include Clario Vpn.
How do I fix CVE-2023-36671?
No fix has been published for CVE-2023-36671 yet. Limit exposure of the affected software until one is available.
Is CVE-2023-36671 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-36671 exists.
Other vulnerabilities in n/a
Sources
Also known as GHSA-cpmg-8xfp-5wj8.