CVE-2021-21424
Medium
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.
SeverityMedium
CVSS5.3
Exploit probability—
Product
Sensiolabs Symfony
PublishedMay 13, 2021
First seenMay 13, 2021
Weakness typeCWE-200Sensitive information exposure
How to fix
Update
- sensiolabs symfony3.4.48, 4.4.23, 5.2.8 or later
- symfony/security5.2.8, 3.4.49, 4.4.24 or later
- symfony/security-guard3.4.48, 4.4.23, 5.2.8 or later
- symfony/security-core3.4.48, 4.4.23, 5.2.8 or later
- lexik/jwt-authentication-bundle2.10.7, 2.11.3 or later
- symfony/maker-bundle1.29.2, 1.31.1 or later
- symfony/security-http5.2.8 or later
- symfony/symfony3.4.49, 4.4.24, 5.2.9 or later
Vendor advisories
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KENRNLB3FYXYGDWRBH2PDBOZZKOD7VY4/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VRUS2H2SSOQWNLBD35SKIWIDQEMV2PD3/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UC7BND775DVZDQT3RMGD2HVB2PKLJDJW/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RH7TMM5CHQYBFFGXWRPJDPB3SKCZXI2M/
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| sensiolabs symfony | 2.8.0 ≤ v < 3.4.48, 4.0.0 ≤ v < 4.4.23, 5.0.0 ≤ v < 5.2.8 | 3.4.48, 4.4.23, 5.2.8 |
| fedoraproject fedora | 33, 34 | — |
| symfony/securityPackagist | 5.0.0 ≤ v < 5.2.8, 2.8.0 ≤ v < 3.4.49, 4.0.0 ≤ v < 4.4.24 | 5.2.8, 3.4.49, 4.4.24 |
| symfony/security-guardPackagist | 2.8.0 ≤ v < 3.4.48, 4.0.0 ≤ v < 4.4.23, 5.0.0 ≤ v < 5.2.8 | 3.4.48, 4.4.23, 5.2.8 |
| symfony/security-corePackagist | 2.8.0 ≤ v < 3.4.48, 4.0.0 ≤ v < 4.4.23, 5.0.0 ≤ v < 5.2.8 | 3.4.48, 4.4.23, 5.2.8 |
| lexik/jwt-authentication-bundlePackagist | 2.0.0 ≤ v < 2.10.7, 2.11.0 ≤ v < 2.11.3 | 2.10.7, 2.11.3 |
| symfony/maker-bundlePackagist | 1.27.0 ≤ v < 1.29.2, 1.30.0 ≤ v < 1.31.1 | 1.29.2, 1.31.1 |
| symfony/security-httpPackagist | 5.1.0 ≤ v < 5.2.8 | 5.2.8 |
| symfony/symfonyPackagist | 2.8.0 ≤ v < 3.4.49, 4.0.0 ≤ v < 4.4.24, 5.0.0 ≤ v < 5.2.9 | 3.4.49, 4.4.24, 5.2.9 |
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