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Status published
High
CVE-2020-1898
The fb_unserialize function did not impose a depth limit for...
Vulnerability Description
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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
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Unknown
0
Affected Vendor
Affected Software
HHVM
Vulnerable Versions:
4.62.1, 4.62.0, 4.61.1, 4.61.0, 4.60.1, 4.60.0, 4.59.1, 4.59.0, 4.58.2, 4.58.0, 4.57.1, 4.57.0, 4.56.1, 4.33.0, 4.32.3, unspecified
Timeline
Official Publish:
March 11th, 2021
Last Modified:
August 4th, 2024
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses (CWE)
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.