CVE-2018-12400 Information disclosure in Firefox

What is CVE-2018-12400?

CVE-2018-12400 is a medium-severity vulnerability in Mozilla Firefox, published on 28 Feb 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In private browsing mode on Firefox for Android, favicons are cached in the cache/icons folder as they are in non-private mode. This allows information leakage of sites visited during private browsing sessions. *Note: this issue only affects Firefox for Android. Desktop versions of Firefox are unaffected.*. This vulnerability affects Firefox < 63.

Weakness: CWE-200

Which versions are affected by CVE-2018-12400?

It affects 1 product.

Products include Mozilla Firefox.

How do I fix CVE-2018-12400?

Upgrade to a fixed version.

Is CVE-2018-12400 being exploited?

There is no known exploitation of CVE-2018-12400 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-wxmw-mw39-8fw9.