CVE-2023-5171
Medium
Description
During Ion compilation, a Garbage Collection could have resulted in a use-after-free condition, allowing an attacker to write two NUL bytes, and cause a potentially exploitable crash. This vulnerability affects Firefox < 118, Firefox ESR < 115.3, and Thunderbird < 115.3.
SeverityMedium
CVSS6.5
Exploit probability—
Product
Mozilla Firefox
PublishedSep 27, 2023
First seenSep 27, 2023
How to fix
Update
- mozilla firefox118 or later
- mozilla firefox_esr115.3 or later
- mozilla thunderbird115.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 118 | 118 |
| mozilla firefox_esr | v < 115.3 | 115.3 |
| mozilla thunderbird | v < 115.3 | 115.3 |
| debian debian_linux | 10.0, 11.0, 12.0 | — |
| fedoraproject fedora | 39 | — |
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