CVE-2020-1898

Summary

The fb_unserialize function did not impose a depth limit for nested deserialization. That meant a maliciously constructed string could cause deserialization to recurse, leading to stack exhaustion. 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-674: Uncontrolled Recursion (CWE-674)

ADP Enrichment

CVE Program Container

Additional References

References