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CVE-2023-4052

6.5 · MEDIUM

The Firefox updater created a directory writable by non-privileged users.

Published Aug 1, 2023CWE-59EPSS 0.71%

Overview

CVE-2023-4052 is a medium-severity vulnerability. It was published on August 1, 2023 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

The Firefox updater created a directory writable by non-privileged users. When uninstalling Firefox, any files in that directory would be recursively deleted with the permissions of the uninstalling user account. This could be combined with creation of a junction (a form of symbolic link) to allow arbitrary file deletion controlled by the non-privileged user.

*This bug only affects Firefox on Windows. Other operating systems are unaffected.* This vulnerability affects Firefox < 116, Firefox ESR < 115.1, and Thunderbird < 115.1.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refbugzilla.mozilla.org/show_bug.cgi?id=1824420Refwww.mozilla.org/security/advisories/mfsa2023-29/Refwww.mozilla.org/security/advisories/mfsa2023-31/Refwww.mozilla.org/security/advisories/mfsa2023-33/Refbugzilla.mozilla.org/show_bug.cgi?id=1824420Refwww.mozilla.org/security/advisories/mfsa2023-29/Refwww.mozilla.org/security/advisories/mfsa2023-31/Refwww.mozilla.org/security/advisories/mfsa2023-33/

How CyberStrike helps

Frequently asked questions

What is CVE-2023-4052?

CVE-2023-4052 is a medium-severity vulnerability. It was published on August 1, 2023 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2023-4052?

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2023-4052?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-4052?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-4052 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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