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.
MITRE
Status: PUBLISHED
Assigner: facebook
Published: 2021-03-11T00:55:19
Updated: 2024-08-04T06:53:59.985Z
Reserved: 2019-12-02T00:00:00
Link: CVE-2020-1899
Vulnrichment
No data.
NVD
Status : Modified
Published: 2021-03-11T01:15:14.333
Modified: 2024-11-21T05:11:34.420
Link: CVE-2020-1899
Redhat
No data.