CVE-2023-29540 Open redirect in Firefox

What is CVE-2023-29540?

CVE-2023-29540 is a medium-severity vulnerability in Mozilla Firefox, published on 2 Jun 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Using a redirect embedded into <code>sourceMappingUrls</code> could allow for navigation to external protocol links in sandboxed iframes without <code>allow-top-navigation-to-custom-protocols</code>. This vulnerability affects Firefox for Android < 112, Firefox < 112, and Focus for Android < 112.

Weakness: CWE-601

Which versions are affected by CVE-2023-29540?

It affects 3 products.

Products include Mozilla Firefox, Mozilla Firefox Mobile, Mozilla Focus.

How do I fix CVE-2023-29540?

Upgrade to a fixed version.

Is CVE-2023-29540 being exploited?

There is no known exploitation of CVE-2023-29540 in the wild and no public exploit code.

Other vulnerabilities in Mozilla Firefox

• CVE-2019-11708 Mozilla Firefox and Thunderbird Sandbox Escape Exploited Critical 10.0
• CVE-2010-3765 Mozilla Multiple Products Remote Code Execution Exploited Critical 9.8
• CVE-2022-26486 Mozilla Firefox Use-After-Free Exploited Critical 9.6
• CVE-2022-26485 Mozilla Firefox Use-After-Free Exploited High 8.8
• CVE-2019-11707 Mozilla Firefox and Thunderbird Type Confusion Exploited High 8.8

All Mozilla Firefox vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-3xgq-mgc9-7wqx, UBUNTU-CVE-2023-29540.