CVE-2020-1918
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Facebook Hhvm
PublishedMar 10, 2021
First seenMar 10, 2021
Weakness typeCWE-127CWE-127
How to fix
Update
- facebook hhvm4.56.3, 4.80.2, 4.93.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| facebook hhvm | v < 4.56.3, 4.57.0 ≤ v < 4.80.2, 4.81.0 ≤ v < 4.93.2, 4.94.0, 4.95.0, 4.96.0, 4.97.0, 4.98.0 | 4.56.3, 4.80.2, 4.93.2 |
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