files added to tar with Phar::buildFromIterator have all-access permissions

Publication Date2020-01-08
SeverityModerate
TypePrivilege Escalation
Affected PHP Versions
  • 7.2.0 - 7.2.27
  • 7.3.0 - 7.3.14
  • 7.4.0 - 7.4.2

CVE Details

In PHP versions 7.2.x below 7.2.28, 7.3.x below 7.3.15, and 7.4.x below 7.4.3, when creating PHAR archive using the PharData::buildFromIterator() method, files are added with default permissions (0666, or all access) even if the original files on the filesystem were with more restrictive permissions. This may result in files having more lax permissions than intended when the archive is extracted.

Recommendations

Upgrade to PHP 7.2.28 or above, 7.3.15 or above, or 7.4.3 or above.