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CVE-2023-29539

8.8 · HIGH

When handling the filename directive in the Content-Disposition header, the filename would be truncated if the filename contained a NULL character.

Published Jun 2, 2023CWE-476EPSS 0.74%

Overview

CVE-2023-29539 is a high-severity vulnerability. It was published on June 2, 2023 and has a CVSS 3.1 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

When handling the filename directive in the Content-Disposition header, the filename would be truncated if the filename contained a NULL character. This could have led to reflected file download attacks potentially tricking users to install malware. This vulnerability affects Firefox < 112, Focus for Android < 112, Firefox ESR < 102.10, Firefox for Android < 112, and Thunderbird < 102.10.

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=1784348Refwww.mozilla.org/security/advisories/mfsa2023-13/Refwww.mozilla.org/security/advisories/mfsa2023-14/Refwww.mozilla.org/security/advisories/mfsa2023-15/Refbugzilla.mozilla.org/show_bug.cgi?id=1784348Refwww.mozilla.org/security/advisories/mfsa2023-13/Refwww.mozilla.org/security/advisories/mfsa2023-14/Refwww.mozilla.org/security/advisories/mfsa2023-15/

How CyberStrike helps

Frequently asked questions

What is CVE-2023-29539?

CVE-2023-29539 is a high-severity vulnerability. It was published on June 2, 2023 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2023-29539?

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2023-29539?

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-2023-29539?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-29539 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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