When downloading files through the Save As dialog on Windows with suggested filenames containing environment variable names, Windows would have resolved those in the context of the current user. <br>*This bug only affects Firefox on Windows. Other versions of Firefox are unaffected.*. This vulnerability affects Firefox < 111, Firefox ESR < 102.9, and Thunderbird < 102.9.
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
| Link | Tags |
|---|---|
| https://www.mozilla.org/security/advisories/mfsa2023-09/ | vendor advisory |
| https://www.mozilla.org/security/advisories/mfsa2023-10/ | vendor advisory |
| https://www.mozilla.org/security/advisories/mfsa2023-11/ | vendor advisory |
| https://bugzilla.mozilla.org/show_bug.cgi?id=1817768 | vendor advisory issue tracking permissions required |