VDB

CVE-2021-24025

CVE-2021-24025 PUBLISHED CVSS 9.800000190734863 CRITICAL

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.

EPSS 1.66% · 74.7th percentile

Risk Scores

CVSS 3.1
9.800000190734863
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score
1.66%
74.7th percentile

Affected Products

VendorProductVersions
Ubuntu:16.04:LTShhvm3.11.1+dfsg-1ubuntu1, *, 0
Ubuntu:18.04:LTShhvm*, 0, 3.21.0+dfsg-2ubuntu2

Timeline

  • Mar 10, 2021 CVE Published
  • Apr 14, 2021 EPSS Score
  • Jun 23, 2021 EPSS Score
  • Aug 24, 2021 EPSS Score
  • Dec 28, 2021 EPSS Score
  • Jan 6, 2022 EPSS Score
  • Feb 4, 2022 EPSS Score
  • Mar 1, 2022 EPSS Score
  • May 2, 2022 EPSS Score
  • Jul 4, 2022 EPSS Score
  • Sep 6, 2022 EPSS Score
  • Nov 8, 2022 EPSS Score
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