Vulnerabilities
Misconfiguration
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CVE Vulnerabilities

CVE-2023-36671

Cleartext Transmission of Sensitive Information

Published: Aug 09, 2023 | Modified: Nov 21, 2024
CVSS 3.x
6.3
MEDIUM
Source:
NVD
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
CVSS 2.x
RedHat/V2
RedHat/V3
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2023-36671
CWEhttps://cwe.mitre.org/data/definitions/319.html

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 servers 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 servers 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

The product transmits sensitive or security-critical data in cleartext in a communication channel that can be sniffed by unauthorized actors.

Affected Software

NameVendorStart VersionEnd Version
VpnClario*5.9.1.1662 (including)
ConnmanUbuntubionic*
ConnmanUbuntulunar*
ConnmanUbuntutrusty*
ConnmanUbuntuxenial*
Gadmin-openvpn-clientUbuntubionic*
Gadmin-openvpn-clientUbuntutrusty*
Gadmin-openvpn-clientUbuntuxenial*
Gadmin-openvpn-serverUbuntubionic*
Gadmin-openvpn-serverUbuntutrusty*
Gadmin-openvpn-serverUbuntuxenial*
Golang-github-apparentlymart-go-openvpn-mgmtUbuntulunar*
KvpncUbuntubionic*
KvpncUbuntutrusty*
KvpncUbuntuxenial*
L2tp-ipsec-vpnUbuntutrusty*
L2tp-ipsec-vpn-daemonUbuntutrusty*
LibreswanUbuntubionic*
LibreswanUbuntulunar*
N2nUbuntubionic*
N2nUbuntulunar*
N2nUbuntutrusty*
N2nUbuntuxenial*
Network-manager-fortisslvpnUbuntubionic*
Network-manager-fortisslvpnUbuntulunar*
Network-manager-iodineUbuntubionic*
Network-manager-iodineUbuntulunar*
Network-manager-iodineUbuntutrusty*
Network-manager-iodineUbuntuxenial*
Network-manager-l2tpUbuntubionic*
Network-manager-l2tpUbuntulunar*
Network-manager-openconnectUbuntubionic*
Network-manager-openconnectUbuntulunar*
Network-manager-openconnectUbuntutrusty*
Network-manager-openconnectUbuntuxenial*
Network-manager-openvpnUbuntubionic*
Network-manager-openvpnUbuntulunar*
Network-manager-openvpnUbuntutrusty*
Network-manager-openvpnUbuntuxenial*
Network-manager-pptpUbuntubionic*
Network-manager-pptpUbuntulunar*
Network-manager-pptpUbuntutrusty*
Network-manager-pptpUbuntuxenial*
Network-manager-sstpUbuntulunar*
Network-manager-strongswanUbuntubionic*
Network-manager-strongswanUbuntulunar*
Network-manager-strongswanUbuntutrusty*
Network-manager-strongswanUbuntuxenial*
Network-manager-vpncUbuntubionic*
Network-manager-vpncUbuntulunar*
Network-manager-vpncUbuntutrusty*
Network-manager-vpncUbuntuxenial*
OpenconnectUbuntubionic*
OpenconnectUbuntufocal*
OpenconnectUbuntulunar*
OpenconnectUbuntumantic*
OpenconnectUbuntuoracular*
OpenconnectUbuntutrusty*
OpenconnectUbuntuxenial*
OpenfortivpnUbuntubionic*
OpenfortivpnUbuntulunar*
OpenvpnUbuntubionic*
OpenvpnUbuntulunar*
OpenvpnUbuntutrusty*
OpenvpnUbuntuxenial*
Pptp-linuxUbuntubionic*
Pptp-linuxUbuntulunar*
Pptp-linuxUbuntutrusty*
Pptp-linuxUbuntuxenial*
QuicktunUbuntubionic*
QuicktunUbuntulunar*
Riseup-vpnUbuntulunar*
Softether-vpnUbuntulunar*
Softether-vpnUbuntumantic*
Softether-vpnUbuntuoracular*
SshuttleUbuntubionic*
SshuttleUbuntulunar*
SshuttleUbuntutrusty*
SshuttleUbuntuxenial*
TincUbuntubionic*
TincUbuntulunar*
TincUbuntutrusty*
TincUbuntuxenial*
VpncUbuntubionic*
VpncUbuntulunar*
VpncUbuntutrusty*
VpncUbuntuxenial*
WireguardUbuntubionic*
WireguardUbuntulunar*
WireguardUbuntutrusty*
WireguardUbuntuxenial*
Zentyal-openvpnUbuntutrusty*

Potential Mitigations

References

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