CVE-2020-1899

Summary

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.

Affected Software

VendorProductVersion RangeStatus
FacebookHHVM4.62.1 < unspecifiedunaffected
FacebookHHVM4.62.0affected
FacebookHHVM4.61.1 < unspecifiedunaffected
FacebookHHVM4.61.0affected
FacebookHHVM4.60.1 < unspecifiedunaffected
FacebookHHVM4.60.0affected
FacebookHHVM4.59.1 < unspecifiedunaffected
FacebookHHVM4.59.0affected
FacebookHHVM4.58.2 < unspecifiedunaffected
FacebookHHVM4.58.0 < unspecifiedaffected
FacebookHHVM4.57.1 < unspecifiedunaffected
FacebookHHVM4.57.0affected
FacebookHHVM4.56.1 < unspecifiedunaffected
FacebookHHVM4.33.0 < unspecifiedaffected
FacebookHHVM4.32.3 < unspecifiedunaffected
FacebookHHVMunspecified < 4.32.3affected

Weaknesses

  • CWE-822: Untrusted Pointer Dereference (CWE-822)

ADP Enrichment

CVE Program Container

Additional References

References