CVE-2020-12407 Information disclosure in Firefox

What is CVE-2020-12407?

CVE-2020-12407 is a medium-severity vulnerability in Mozilla Firefox, published on 9 Jul 2020. 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

Mozilla Developer Nicolas Silva found that when using WebRender, Firefox would under certain conditions leak arbitrary GPU memory to the visible screen. The leaked memory content was visible to the user, but not observable from web content. This vulnerability affects Firefox < 77.

Weakness: CWE-125

Which versions are affected by CVE-2020-12407?

It affects 1 product.

Products include Mozilla Firefox.

How do I fix CVE-2020-12407?

Upgrade to a fixed version.

Is CVE-2020-12407 being exploited?

There is no known exploitation of CVE-2020-12407 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-c5wv-fh3j-8jqv, UBUNTU-CVE-2020-12407.