The unserialize() function supported a type code, "S", which was meant to be supported only for APC serialization. This type code allowed arbitrary memory addresses to be accessed as if they were static StringData objects. This issue affected HHVM prior to v4.32.3, between versions 4.33.0 and 4.56.0, 4.57.0, 4.58.0, 4.58.1, 4.59.0, 4.60.0, 4.61.0, 4.62.0.
Metrics
Affected Vendors & Products
References
History
No history.
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Status: PUBLISHED
Assigner: facebook
Published:
Updated: 2024-08-04T06:53:59.985Z
Reserved: 2019-12-02T00:00:00
Link: CVE-2020-1899
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Status : Modified
Published: 2021-03-11T01:15:14.333
Modified: 2024-11-21T05:11:34.420
Link: CVE-2020-1899
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