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CVE-2020-1919 Incorrect bounds calculations in substr_compare could lead to an out-of-bounds read when the second string argument…
Description
Incorrect bounds calculations in substr_compare could lead to an out-of-bounds read when the second string argument passed in is longer than the first. 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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