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CVE-2023-36671

Publication date 9 August 2023

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

6.3 · Medium

Score breakdown

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.

Read the notes from the security team

Status

Package Ubuntu Release Status
connman 24.04 LTS noble
Not affected
23.10 mantic
Not affected
23.04 lunar Ignored
22.04 LTS jammy
Not affected
20.04 LTS focal
Not affected
18.04 LTS bionic
Not affected
16.04 LTS xenial
Not affected
14.04 LTS trusty Ignored
gadmin-openvpn-client 24.04 LTS noble Not in release
23.10 mantic Not in release
23.04 lunar Not in release
22.04 LTS jammy Not in release
20.04 LTS focal
Not affected
18.04 LTS bionic
Not affected
16.04 LTS xenial
Not affected
14.04 LTS trusty Ignored
gadmin-openvpn-server 24.04 LTS noble Not in release
23.10 mantic Not in release
23.04 lunar Not in release
22.04 LTS jammy Not in release
20.04 LTS focal
Not affected
18.04 LTS bionic
Not affected
16.04 LTS xenial
Not affected
14.04 LTS trusty Ignored
golang-github-apparentlymart-go-openvpn-mgmt 24.04 LTS noble
Not affected
23.10 mantic
Not affected
23.04 lunar Ignored
22.04 LTS jammy
Not affected
20.04 LTS focal
Not affected
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
kvpnc 24.04 LTS noble Not in release
23.10 mantic Not in release
23.04 lunar Not in release
22.04 LTS jammy Not in release
20.04 LTS focal Not in release
18.04 LTS bionic
Not affected
16.04 LTS xenial
Not affected
14.04 LTS trusty Ignored
l2tp-ipsec-vpn 24.04 LTS noble Not in release
23.10 mantic Not in release
23.04 lunar Not in release
22.04 LTS jammy Not in release
20.04 LTS focal Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Ignored
l2tp-ipsec-vpn-daemon 24.04 LTS noble Not in release
23.10 mantic Not in release
23.04 lunar Not in release
22.04 LTS jammy Not in release
20.04 LTS focal Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Ignored
libreswan 24.04 LTS noble
Not affected
23.10 mantic
Not affected
23.04 lunar Ignored
22.04 LTS jammy
Not affected
20.04 LTS focal
Not affected
18.04 LTS bionic
Not affected
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
mozillavpn 24.04 LTS noble Not in release
23.10 mantic Not in release
23.04 lunar Not in release
22.04 LTS jammy
Not affected
20.04 LTS focal Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
n2n 24.04 LTS noble
Not affected
23.10 mantic
Not affected
23.04 lunar Ignored
22.04 LTS jammy
Not affected
20.04 LTS focal
Not affected
18.04 LTS bionic
Not affected
16.04 LTS xenial
Not affected
14.04 LTS trusty Ignored
network-manager-fortisslvpn 24.04 LTS noble
Not affected
23.10 mantic
Not affected
23.04 lunar Ignored
22.04 LTS jammy
Not affected
20.04 LTS focal
Not affected
18.04 LTS bionic
Not affected
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
network-manager-iodine 24.04 LTS noble
Not affected
23.10 mantic
Not affected
23.04 lunar Ignored
22.04 LTS jammy
Not affected
20.04 LTS focal
Not affected
18.04 LTS bionic
Not affected
16.04 LTS xenial
Not affected
14.04 LTS trusty Ignored
network-manager-l2tp 24.04 LTS noble
Not affected
23.10 mantic
Not affected
23.04 lunar Ignored
22.04 LTS jammy
Not affected
20.04 LTS focal
Not affected
18.04 LTS bionic
Not affected
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
network-manager-openconnect 24.04 LTS noble
Not affected
23.10 mantic
Not affected
23.04 lunar Ignored
22.04 LTS jammy
Not affected
20.04 LTS focal
Not affected
18.04 LTS bionic
Not affected
16.04 LTS xenial
Not affected
14.04 LTS trusty Ignored
network-manager-openvpn 24.04 LTS noble
Not affected
23.10 mantic
Not affected
23.04 lunar Ignored
22.04 LTS jammy
Not affected
20.04 LTS focal
Not affected
18.04 LTS bionic
Not affected
16.04 LTS xenial
Not affected
14.04 LTS trusty Ignored
network-manager-pptp 24.04 LTS noble
Not affected
23.10 mantic
Not affected
23.04 lunar Ignored
22.04 LTS jammy
Not affected
20.04 LTS focal
Not affected
18.04 LTS bionic
Not affected
16.04 LTS xenial
Not affected
14.04 LTS trusty Ignored
network-manager-sstp 24.04 LTS noble
Not affected
23.10 mantic
Not affected
23.04 lunar Ignored
22.04 LTS jammy
Not affected
20.04 LTS focal Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
network-manager-strongswan 24.04 LTS noble
Not affected
23.10 mantic
Not affected
23.04 lunar Ignored
22.04 LTS jammy
Not affected
20.04 LTS focal
Not affected
18.04 LTS bionic
Not affected
16.04 LTS xenial
Not affected
14.04 LTS trusty Ignored
network-manager-vpnc 24.04 LTS noble
Not affected
23.10 mantic
Not affected
23.04 lunar Ignored
22.04 LTS jammy
Not affected
20.04 LTS focal
Not affected
18.04 LTS bionic
Not affected
16.04 LTS xenial
Not affected
14.04 LTS trusty Ignored
openconnect 24.04 LTS noble
Vulnerable
23.10 mantic Ignored
23.04 lunar Ignored
22.04 LTS jammy
Vulnerable
20.04 LTS focal
Vulnerable
18.04 LTS bionic
Vulnerable
16.04 LTS xenial
Vulnerable
14.04 LTS trusty Ignored
openfortivpn 24.04 LTS noble
Not affected
23.10 mantic
Not affected
23.04 lunar Ignored
22.04 LTS jammy
Not affected
20.04 LTS focal
Not affected
18.04 LTS bionic
Not affected
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
openvpn 24.04 LTS noble
Not affected
23.10 mantic
Not affected
23.04 lunar Ignored
22.04 LTS jammy
Not affected
20.04 LTS focal
Not affected
18.04 LTS bionic
Not affected
16.04 LTS xenial
Not affected
14.04 LTS trusty
Not affected
pptp-linux 24.04 LTS noble
Not affected
23.10 mantic
Not affected
23.04 lunar Ignored
22.04 LTS jammy
Not affected
20.04 LTS focal
Not affected
18.04 LTS bionic
Not affected
16.04 LTS xenial
Not affected
14.04 LTS trusty Ignored
quicktun 24.04 LTS noble
Not affected
23.10 mantic
Not affected
23.04 lunar Ignored
22.04 LTS jammy
Not affected
20.04 LTS focal
Not affected
18.04 LTS bionic
Not affected
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
riseup-vpn 24.04 LTS noble
Not affected
23.10 mantic
Not affected
23.04 lunar Ignored
22.04 LTS jammy Not in release
20.04 LTS focal Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
softether-vpn 24.04 LTS noble
Vulnerable
23.10 mantic Ignored
23.04 lunar Ignored
22.04 LTS jammy
Vulnerable
20.04 LTS focal Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
sshuttle 24.04 LTS noble
Not affected
23.10 mantic
Not affected
23.04 lunar Ignored
22.04 LTS jammy
Not affected
20.04 LTS focal
Not affected
18.04 LTS bionic
Not affected
16.04 LTS xenial
Not affected
14.04 LTS trusty Ignored
tinc 24.04 LTS noble
Not affected
23.10 mantic
Not affected
23.04 lunar Ignored
22.04 LTS jammy
Not affected
20.04 LTS focal
Not affected
18.04 LTS bionic
Not affected
16.04 LTS xenial
Not affected
14.04 LTS trusty Ignored
vpnc 24.04 LTS noble
Not affected
23.10 mantic
Not affected
23.04 lunar Ignored
22.04 LTS jammy
Not affected
20.04 LTS focal
Not affected
18.04 LTS bionic
Not affected
16.04 LTS xenial
Not affected
14.04 LTS trusty Ignored
wireguard 24.04 LTS noble
Not affected
23.10 mantic
Not affected
23.04 lunar Ignored
22.04 LTS jammy
Not affected
20.04 LTS focal
Not affected
18.04 LTS bionic
Not affected
16.04 LTS xenial
Not affected
14.04 LTS trusty Ignored
zentyal-openvpn 24.04 LTS noble Not in release
23.10 mantic Not in release
23.04 lunar Not in release
22.04 LTS jammy Not in release
20.04 LTS focal Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Ignored

Notes

mdeslaur

other VPN software may also be affected. See whitepaper for the complete list.

evancaville

as of 2024-02-05, there doesn't appear to be an upstream fix available for network-manager-openvpn, openvpn packages. as of 2024-02-29, there doesn't appear to be an upstream fix available for network-manager-pptp, pptp-linux.

mdeslaur

as of 2024-04-15, this CVE appears to be specific to the Clario VPN client, marking all Ubuntu packages as not-affected

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
softether-vpn

Severity score breakdown

Parameter Value
Base score 6.3 · Medium
Attack vector Local
Attack complexity High
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact None
Vector CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N