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CVE-2021-37704

5.4 · MEDIUM

PhpFastCache is a high-performance backend cache system (packagist package phpfastcache/phpfastcache).

Published Aug 12, 2021CWE-200EPSS 5.89%

Overview

CVE-2021-37704 is a medium-severity vulnerability. It was published on August 12, 2021 and has a CVSS 3.1 base score of 5.4 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.4, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

PhpFastCache is a high-performance backend cache system (packagist package phpfastcache/phpfastcache). In versions before 6.1.5, 7.1.2, and 8.0.7 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). 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. As a workaround, protect the `/vendor` directory from public access.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/PHPSocialNetwork/phpfastcache/blob/master/CHANGELOG.md#807GitHubgithub.com/PHPSocialNetwork/phpfastcache/commit/41a77d0d8f126dbd6fbedcd9e6a82e86cdaafa51GitHubgithub.com/PHPSocialNetwork/phpfastcache/pull/813GitHubgithub.com/PHPSocialNetwork/phpfastcache/pull/814GitHubgithub.com/PHPSocialNetwork/phpfastcache/pull/815GitHubgithub.com/PHPSocialNetwork/phpfastcache/security/advisories/GHSA-cvh5-p6r6-g2qcGitHubgithub.com/flextype/flextype/issues/567Refpackagist.org/packages/phpfastcache/phpfastcacheGitHubgithub.com/PHPSocialNetwork/phpfastcache/blob/master/CHANGELOG.md#807GitHubgithub.com/PHPSocialNetwork/phpfastcache/commit/41a77d0d8f126dbd6fbedcd9e6a82e86cdaafa51

How CyberStrike helps

Frequently asked questions

What is CVE-2021-37704?

CVE-2021-37704 is a medium-severity vulnerability. It was published on August 12, 2021 and has a CVSS 3.1 base score of 5.4 (MEDIUM).

How severe is CVE-2021-37704?

This vulnerability has a CVSS 3.1 base score of 5.4, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2021-37704?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2021-37704?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-37704 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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