Impact

The phpinfo() can be exposed if the /vendor is not protected from public access. This is a rare situation today since the vendor directory is often located outside the web directory or protected via server rule (.htaccess, etc).

Patches

Only the v6, v7 and v8 will be patched respectively in 8.0.7, 7.1.2, 6.1.5.
Older versions such as v5, v4 are not longer supported and will NOT be patched.

Workarounds

Protect the /vendor directory from public access.

References

The first issue revealing this vulnerability is located here: flextype/flextype#567
V6 fix: PHPSocialNetwork/phpfastcache#815
V7 fix: PHPSocialNetwork/phpfastcache#814
V8 fix: PHPSocialNetwork/phpfastcache#813

For more information

If you have any questions or comments about this advisory:

• Open an issue in our issue tracker
• Email us at security@geolim4.com

References

• GHSA-cvh5-p6r6-g2qc
• https://nvd.nist.gov/vuln/detail/CVE-2021-37704
• flextype/flextype#567
• PHPSocialNetwork/phpfastcache#813
• PHPSocialNetwork/phpfastcache#814
• PHPSocialNetwork/phpfastcache#815
• PHPSocialNetwork/phpfastcache@41a77d0
• https://github.com/PHPSocialNetwork/phpfastcache/blob/master/CHANGELOG.md#807
• https://packagist.org/packages/phpfastcache/phpfastcache