folly::secureRandom will re-use a buffer between parent and child processes when fork() is called. That will result in multiple forked children producing repeat (or similar) results. This affects HHVM 3.26 before 3.26.3 and the folly library between v2017.12.11.00 and v2018.08.09.00.
| Vulnerable Product | Search on Vulmon | Subscribe to Product |
|---|---|---|
facebook folly |
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facebook hhvm |
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