CVE-2022-42931 Information disclosure in Firefox

What is CVE-2022-42931?

CVE-2022-42931 is a low-severity vulnerability in Mozilla Firefox, published on 22 Dec 2022. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Logins saved by Firefox should be managed by the Password Manager component which uses encryption to save files on-disk. Instead, the username (not password) was saved by the Form Manager to an unencrypted file on disk. This vulnerability affects Firefox < 106.

Weakness: CWE-312

Which versions are affected by CVE-2022-42931?

It affects 1 product.

Products include Mozilla Firefox.

How do I fix CVE-2022-42931?

Upgrade to a fixed version.

Is CVE-2022-42931 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-42931 exists.

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-748v-pxm5-9m8q, UBUNTU-CVE-2022-42931.