CVE-2020-1900

State: Published
Severity: Not scored
Published: Mar 11, 2021
Updated: Aug 4, 2024
Reserved: Dec 2, 2019

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.

Scores

The record has no CVSS score.

Weaknesses

CWE-416 Use After Free (CWE-416)

Affected Products

Product	Versions
HHVMFacebook	4.62.1 to before unspecifiedNot affected 4.62.0Affected 4.61.1 to before unspecifiedNot affected 4.61.0Affected 4.60.1 to before unspecifiedNot affected 4.60.0Affected 4.59.1 to before unspecifiedNot affected 4.59.0Affected 4.58.2 to before unspecifiedNot affected 4.58.0 to before unspecifiedAffected 4.57.1 to before unspecifiedNot affected 4.57.0Affected 4.56.1 to before unspecifiedNot affected 4.33.0 to before unspecifiedAffected 4.32.3 to before unspecifiedNot affected before 4.32.3Affected

Product

Versions

HHVMFacebook

4.62.1 to before unspecifiedNot affected
4.62.0Affected
4.61.1 to before unspecifiedNot affected
4.61.0Affected
4.60.1 to before unspecifiedNot affected
4.60.0Affected
4.59.1 to before unspecifiedNot affected
4.59.0Affected
4.58.2 to before unspecifiedNot affected
4.58.0 to before unspecifiedAffected
4.57.1 to before unspecifiedNot affected
4.57.0Affected
4.56.1 to before unspecifiedNot affected
4.33.0 to before unspecifiedAffected
4.32.3 to before unspecifiedNot affected
before 4.32.3Affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.