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Unrated severityNVD Advisory· Published Mar 11, 2021· Updated Aug 4, 2024

CVE-2020-1900

CVE-2020-1900

Description

When unserializing an object with dynamic properties HHVM needs to pre-reserve the full size of the dynamic property array before inserting anything into it. Otherwise the array might resize, invalidating previously stored references. This pre-reservation was not occurring in 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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

2
  • Facebook/Hhvmllm-fuzzy2 versions
    versions prior to 4.32.3, 4.33.0-4.56.0, 4.57.0, 4.58.0, 4.58.1, 4.59.0, 4.60.0, 4.61.0, 4.62.0+ 1 more
    • (no CPE)range: versions prior to 4.32.3, 4.33.0-4.56.0, 4.57.0, 4.58.0, 4.58.1, 4.59.0, 4.60.0, 4.61.0, 4.62.0
    • (no CPE)range: 4.62.0

Patches

Vulnerability mechanics

References

2

News mentions

0

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