CVEvulnerability

CVE-2021-24025

9.8 CRITICAL Published 2021-03-10 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-03-10
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
7.5 HIGH — AV:N/AC:L/Au:N/C:P/I:P/A:P
Weaknesses
CWE-122, CWE-190

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.

Affected configurations

• facebook hhvm (< 4.56.3) • facebook hhvm (>= 4.57.0 <= 4.80.1) • facebook hhvm (>= 4.81.0 <= 4.93.1) • facebook hhvm 4.94.0 • facebook hhvm 4.95.0 • facebook hhvm 4.96.0 • facebook hhvm 4.97.0 • facebook hhvm 4.98.0

Related

Weakness · CWE (2)

  • CWE-122 Heap-based Buffer Overflow weakness
  • CWE-190 Integer Overflow or Wraparound weakness

References