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Status published
Critical
CVE-2021-24025
Due to incorrect string size calculations inside the preg_quote function,...
Vulnerability Description
Due to incorrect string size calculations inside the preg_quote function, a large input string passed to the function can trigger an integer overflow leading to a heap overflow. This issue affects HHVM versions prior to 4.56.3, all versions between 4.57.0 and 4.80.1, all versions between 4.81.0 and 4.93.1, and versions 4.94.0, 4.95.0, 4.96.0, 4.97.0, 4.98.0.
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.
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0
Affected Vendor
Affected Software
HHVM
Vulnerable Versions:
4.98.1, 4.98.0, 4.97.1, 4.97.0, 4.96.1, 4.96.0, 4.95.1, 4.95.0, 4.94.1, 4.94.0, 4.93.2, 4.81.0, 4.80.2, 4.57.0, 4.56.3, unspecified
Timeline
Official Publish:
March 10th, 2021
Last Modified:
August 3rd, 2024
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H