NetSight
critical9.8

CVE-2021-24025

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 t…

Impact

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 products

VendorProductAffected versions
FacebookHhvm
before 4.56.3
from 4.57.0 through 4.80.1
from 4.81.0 through 4.93.1
Versions 4.94.0, 4.95.0, 4.96.0

Weakness classification

References