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CVE-2020-1918 In-memory file operations (ie: using fopen on a data URI) did not properly restrict negative seeking, allowing for the…
Description
In-memory file operations (ie: using fopen on a data URI) did not properly restrict negative seeking, allowing for the reading of memory prior to the in-memory buffer. 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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