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CVE-2021-32693

6.8 · MEDIUM

Symfony is a PHP framework for web and console applications and a set of reusable PHP components.

Published Jun 17, 2021CWE-287EPSS 1.39%

Overview

CVE-2021-32693 is a medium-severity vulnerability. It was published on June 17, 2021 and has a CVSS 3.1 base score of 6.8 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.8, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. A vulnerability related to firewall authentication is in Symfony starting with version 5.3.0 and prior to 5.3.2. When an application defines multiple firewalls, the token authenticated by one of the firewalls was available for all other firewalls. This could be abused when the application defines different providers for each part of the application, in such a situation, a user authenticated on a part of the application could be considered authenticated on the rest of the application. Starting in version 5.3.2, a patch ensures that the authenticated token is only available for the firewall that generates it.

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/symfony/security-http/commit/6bf4c31219773a558b019ee12e54572174ff8129GitHubgithub.com/symfony/symfony/commit/3084764ad82f29dbb025df19978b9cbc3ab34728GitHubgithub.com/symfony/symfony/security/advisories/GHSA-rfcf-m67m-jcrqRefsymfony.com/blog/cve-2021-32693-authentication-granted-to-all-firewalls-instead-of-just-oneGitHubgithub.com/symfony/security-http/commit/6bf4c31219773a558b019ee12e54572174ff8129GitHubgithub.com/symfony/symfony/commit/3084764ad82f29dbb025df19978b9cbc3ab34728GitHubgithub.com/symfony/symfony/security/advisories/GHSA-rfcf-m67m-jcrqRefsymfony.com/blog/cve-2021-32693-authentication-granted-to-all-firewalls-instead-of-just-one

How CyberStrike helps

Frequently asked questions

What is CVE-2021-32693?

CVE-2021-32693 is a medium-severity vulnerability. It was published on June 17, 2021 and has a CVSS 3.1 base score of 6.8 (MEDIUM).

How severe is CVE-2021-32693?

This vulnerability has a CVSS 3.1 base score of 6.8, 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-2021-32693?

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-2021-32693?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-32693 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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