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Moderate severityNVD Advisory· Published May 13, 2021· Updated Aug 3, 2024

Prevent user enumeration using Guard or the new Authenticator-based Security

CVE-2021-21424

Description

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. The ability to enumerate users was possible without relevant permissions due to different handling depending on whether the user existed or not when attempting to use the switch users functionality. We now ensure that 403s are returned whether the user exists or not if a user cannot switch to a user or if the user does not exist. The patch for this issue is available for branch 3.4.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
symfony/securityPackagist
>= 5.0.0, < 5.2.85.2.8
symfony/security-guardPackagist
>= 2.8.0, < 3.4.483.4.48
symfony/security-guardPackagist
>= 4.0.0, < 4.4.234.4.23
symfony/security-guardPackagist
>= 5.0.0, < 5.2.85.2.8
symfony/security-corePackagist
>= 2.8.0, < 3.4.483.4.48
symfony/security-corePackagist
>= 4.0.0, < 4.4.234.4.23
symfony/security-corePackagist
>= 5.0.0, < 5.2.85.2.8
lexik/jwt-authentication-bundlePackagist
>= 2.0.0, < 2.10.72.10.7
lexik/jwt-authentication-bundlePackagist
>= 2.11.0, < 2.11.32.11.3
symfony/maker-bundlePackagist
>= 1.27.0, < 1.29.21.29.2
symfony/maker-bundlePackagist
>= 1.30.0, < 1.31.11.31.1
symfony/security-httpPackagist
>= 5.1.0, < 5.2.85.2.8
symfony/securityPackagist
>= 2.8.0, < 3.4.493.4.49
symfony/securityPackagist
>= 4.0.0, < 4.4.244.4.24
symfony/symfonyPackagist
>= 2.8.0, < 3.4.493.4.49
symfony/symfonyPackagist
>= 4.0.0, < 4.4.244.4.24
symfony/symfonyPackagist
>= 5.0.0, < 5.2.95.2.9

Affected products

9

Patches

Vulnerability mechanics

References

24

News mentions

0

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