CVE-2023-3482 Security feature bypass in Firefox

What is CVE-2023-3482?

CVE-2023-3482 is a medium-severity vulnerability in Mozilla Firefox, published on 5 Jul 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

When Firefox is configured to block storage of all cookies, it was still possible to store data in localstorage by using an iframe with a source of 'about:blank'. This could have led to malicious websites storing tracking data without permission. This vulnerability affects Firefox < 115.

Weakness: CWE-862

Which versions are affected by CVE-2023-3482?

It affects 1 product.

Products include Mozilla Firefox.

How do I fix CVE-2023-3482?

Upgrade to a fixed version.

Is CVE-2023-3482 being exploited?

There is no known exploitation of CVE-2023-3482 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-qv6f-vv52-ch9r, UBUNTU-CVE-2023-3482.