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CVE-2021-24025 Due to incorrect string size calculations inside the preg_quote function, a large input string passed to the function…
Description
Due to incorrect string size calculations inside the preg_quote function, a large input string passed to the function can trigger an integer overflow leading to a heap overflow. This issue affects HHVM versions prior to 4.56.3, all versions between 4.57.0 and 4.80.1, all versions between 4.81.0 and 4.93.1, and versions 4.94.0, 4.95.0, 4.96.0, 4.97.0, 4.98.0.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| HHVM | 4.98.0 | 4.98.1 |
| HHVM | 4.97.0 | 4.97.1 |
| HHVM | 4.96.0 | 4.96.1 |
| HHVM | 4.95.0 | 4.95.1 |
| HHVM | 4.94.0 | 4.94.1 |
| HHVM 4.93 | earliest → < 4.93.2 | 4.93.2 |
| HHVM 4.81 | 4.81.0 → latest | No fix stated |
| HHVM 4.80 | earliest → < 4.80.2 | 4.80.2 |
| HHVM 4.57 | 4.57.0 → latest | No fix stated |
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| Product | Affected versions | Fixed in |
|---|---|---|
| HHVM 4.56 | earliest → < 4.56.3 | 4.56.3 |
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