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.
problem types: Heap-based Buffer Overflow (CWE-122)
affected:
{
product: HHVM
vendor: Facebook
versions:
lessThan: unspecified, status: unaffected, version: 4.98.1, versionType: custom
status: affected, version: 4.98.0
lessThan: unspecified, status: unaffected, version: 4.97.1, versionType: custom
status: affected, version: 4.97.0
lessThan: unspecified, status: unaffected, version: 4.96.1, versionType: custom
status: affected, version: 4.96.0
lessThan: unspecified, status: unaffected, version: 4.95.1, versionType: custom
status: affected, version: 4.95.0
lessThan: unspecified, status: unaffected, version: 4.94.1, versionType: custom
status: affected, version: 4.94.0
lessThan: unspecified, status: unaffected, version: 4.93.2, versionType: custom
lessThan: unspecified, status: affected, version: 4.81.0, versionType: custom
lessThan: unspecified, status: unaffected, version: 4.80.2, versionType: custom
lessThan: unspecified, status: affected, version: 4.57.0, versionType: custom
lessThan: unspecified, status: unaffected, version: 4.56.3, versionType: custom
lessThan: 4.56.3, status: affected, version: unspecified, versionType: custom
}