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 prior to 3.26.3 and the folly library between v2017.12.11.00 and v2018.08.09.00.
                
            Metrics
Affected Vendors & Products
References
        History
                    Tue, 06 May 2025 17:15:00 +0000
| Type | Values Removed | Values Added | 
|---|---|---|
| Metrics | cvssV3_1 
 
 | 
 MITRE
                        MITRE
                    Status: PUBLISHED
Assigner: facebook
Published:
Updated: 2025-05-06T16:39:21.216Z
Reserved: 2018-01-26T00:00:00.000Z
Link: CVE-2018-6337
 Vulnrichment
                        Vulnrichment
                    Updated: 2024-08-05T06:01:48.614Z
 NVD
                        NVD
                    Status : Modified
Published: 2018-12-31T22:29:00.247
Modified: 2025-05-06T17:15:50.983
Link: CVE-2018-6337
 Redhat
                        Redhat
                    No data.