CVE-2023-29542
Critical
Description
A newline in a filename could have been used to bypass the file extension security mechanisms that replace malicious file extensions such as .lnk with .download. This could have led to accidental execution of malicious code. *This bug only affects Firefox and Thunderbird on Windows. Other versions of Firefox and Thunderbird are unaffected.* This vulnerability affects Firefox < 112, Firefox ESR < 102.10, and Thunderbird < 102.10.
SeverityCritical
CVSS9.8
Exploit probability—
Product
Mozilla Firefox
PublishedJun 19, 2023
First seenJun 19, 2023
How to fix
Update
- mozilla firefox112.0 or later
- mozilla firefox_esr102.10 or later
- mozilla thunderbird102.10 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 112.0 | 112.0 |
| mozilla firefox_esr | v < 102.10 | 102.10 |
| mozilla thunderbird | v < 102.10 | 102.10 |
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