Mozilla Firefox and 4 others: A newline in a filename could have been used to bypass the file extension security mechanisms that replace…
CVE-2023-29542 is fixed in 3 products on 1 platform, first by Mozilla Firefox (en-US) 112.0, released April 12, 2023. It is not reported as exploited. Patch Radar priority: Urgent.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Windows apps | |||
| Mozilla Firefox (en-US) | 112.0 | Mozilla Firefox (en-US) 112.0 | Apr 12, 2023 |
| Mozilla Firefox ESR (en-US) | 115.4.0 | Mozilla Firefox ESR (en-US) 115.4.0 | Oct 17, 2023 |
| Mozilla Thunderbird (en-US) | 115.8.0 | Mozilla Thunderbird (en-US) 115.8.0 | Feb 21, 2024 |
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