Vulnerability: CVE-2020-1892

Insufficient boundary checks when decoding JSON in JSON_parser allows read access to out of bounds memory, potentially leading to information leak and DOS. This issue affects HHVM 4.45.0, 4.44.0, 4.43.0, 4.42.0, 4.41.0, 4.40.0, 4.39.0, versions between 4.33.0 and 4.38.0 (inclusive), versions between 4.9.0 and 4.32.0 (inclusive), and versions prior to 4.8.7.


https://github.com/facebook/hhvm/commit/dabd48caf74995e605f1700344f1ff4a5d83441d
https://hhvm.com/blog/2020/02/20/security-update.html
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-1892


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