Vulnerability Monitor

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CVE-2021-32693

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.

Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 6.8, indicating it can be exploited remotely over the network but requires specific conditions to be met without requiring user interaction requiring only low-level privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), for affected systems. Impacting 1 product from sensiolabs organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2021, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.

Published

2021-06-17T23:15:07.597

Last Modified

2024-11-21T06:07:32.710

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 6.8 (MEDIUM)

CVSSv2 Vector

AV:N/AC:L/Au:S/C:P/I:P/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: SINGLE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

8.0

Impact Score

6.4

Weaknesses

Type: Secondary
CWE-287

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	sensiolabs	symfony	< 5.3.2	Yes

References

https://github.com/symfony/security-http/commit/6bf4c31219773a558b019ee12e54572174ff8129 Patch, Third Party Advisory ([email protected])
https://github.com/symfony/symfony/commit/3084764ad82f29dbb025df19978b9cbc3ab34728 Patch, Third Party Advisory ([email protected])
https://github.com/symfony/symfony/security/advisories/GHSA-rfcf-m67m-jcrq Patch, Third Party Advisory ([email protected])
https://symfony.com/blog/cve-2021-32693-authentication-granted-to-all-firewalls-instead-of-just-one Patch, Vendor Advisory ([email protected])
https://github.com/symfony/security-http/commit/6bf4c31219773a558b019ee12e54572174ff8129 Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/symfony/symfony/commit/3084764ad82f29dbb025df19978b9cbc3ab34728 Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/symfony/symfony/security/advisories/GHSA-rfcf-m67m-jcrq Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://symfony.com/blog/cve-2021-32693-authentication-granted-to-all-firewalls-instead-of-just-one Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For sensiolabs's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.