CVE-2023-4104

Public Exploit

Description

An invalid Polkit Authentication check and missing authentication requirements for D-Bus methods allowed any local user to configure arbitrary VPN setups. *This bug only affects Mozilla VPN on Linux. Other operating systems are unaffected.* This vulnerability affects Mozilla VPN client for Linux < v2.16.1.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.06%
Vendor Advisory mozilla.org
Affected: Mozilla Mozilla VPN client for Linux
Published at:
Updated at:

References

Link Tags
https://bugzilla.mozilla.org/show_bug.cgi?id=1831318 issue tracking exploit
https://github.com/mozilla-mobile/mozilla-vpn-client/pull/7055 patch issue tracking
https://github.com/mozilla-mobile/mozilla-vpn-client/pull/7110 patch issue tracking
https://github.com/mozilla-mobile/mozilla-vpn-client/pull/7151 issue tracking
https://www.mozilla.org/security/advisories/mfsa2023-39/ vendor advisory
https://www.openwall.com/lists/oss-security/2023/08/03/1 mailing list third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2023-4104?
CVE-2023-4104 has been scored as a medium severity vulnerability.
How to fix CVE-2023-4104?
To fix CVE-2023-4104, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-4104 being actively exploited in the wild?
It is possible that CVE-2023-4104 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-4104?
CVE-2023-4104 affects Mozilla Mozilla VPN client for Linux.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.