Install/Filesystem.pm in Bugzilla 3.5.1 through 3.6 and 3.7, when use_suexec is enabled, uses world-readable permissions for the localconfig files, which allows local users to read sensitive configuration fields, as demonstrated by the database password field and the site_wide_secret field.

Mozilla Firefox OS before 2.2 allows physically proximate attackers to bypass the pass-code protection mechanism and access USB Mass Storage (UMS) media volumes by using the USB interface for a mount operation.

Initially, a user opens a Private Browsing Window and generates a password for a site, then closes the Private Browsing Window but leaves Firefox open. Subsequently, if the user had opened a new Private Browsing Window, revisited the same site, and generated a new password - the generated passwords would have been identical, rather than independent. This vulnerability affects Firefox < 75.

During ECDSA signature generation, padding applied in the nonce designed to ensure constant-time scalar multiplication was removed, resulting in variable-time execution dependent on secret data. This vulnerability affects Firefox < 80 and Firefox for Android < 80.

Mozilla Firefox before 28.0.1 on Android processes a file: URL by copying a local file onto the SD card, which allows attackers to obtain sensitive information from the Firefox profile directory via a crafted application.