GitHub Advisoryadvisory · Packagist

GHSA-5pv8-ppvj-4h68 Prevent user enumeration using Guard or the new Authenticator-based Security

MEDIUM Published 2021-05-13 Modified 2024-02-26 Official page ↗
Aliases
CVE-2021-21424
Ecosystem
Packagist
Packages
symfony/security, symfony/security-guard, symfony/security-core, lexik/jwt-authentication-bundle, symfony/maker-bundle, symfony/security-http, symfony/symfony
Severity
Moderate
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weaknesses
CWE-200, CWE-203
Reviewed
2021-05-13

Affected packages

• Packagist symfony/security: >= 5.0.0, < 5.2.8 → fixed in 5.2.8 • Packagist symfony/security-guard: >= 2.8.0, < 3.4.48 → fixed in 3.4.48 • Packagist symfony/security-guard: >= 4.0.0, < 4.4.23 → fixed in 4.4.23 • Packagist symfony/security-guard: >= 5.0.0, < 5.2.8 → fixed in 5.2.8 • Packagist symfony/security-core: >= 2.8.0, < 3.4.48 → fixed in 3.4.48 • Packagist symfony/security-core: >= 4.0.0, < 4.4.23 → fixed in 4.4.23 • Packagist symfony/security-core: >= 5.0.0, < 5.2.8 → fixed in 5.2.8 • Packagist lexik/jwt-authentication-bundle: >= 2.0.0, < 2.10.7 → fixed in 2.10.7 • Packagist lexik/jwt-authentication-bundle: >= 2.11.0, < 2.11.3 → fixed in 2.11.3 • Packagist symfony/maker-bundle: >= 1.27.0, < 1.29.2 → fixed in 1.29.2 • Packagist symfony/maker-bundle: >= 1.30.0, < 1.31.1 → fixed in 1.31.1 • Packagist symfony/security-http: >= 5.1.0, < 5.2.8 → fixed in 5.2.8 • Packagist symfony/security: >= 2.8.0, < 3.4.49 → fixed in 3.4.49 • Packagist symfony/security: >= 4.0.0, < 4.4.24 → fixed in 4.4.24 • Packagist symfony/symfony: >= 2.8.0, < 3.4.49 → fixed in 3.4.49 • Packagist symfony/symfony: >= 4.0.0, < 4.4.24 → fixed in 4.4.24 • Packagist symfony/symfony: >= 5.0.0, < 5.2.9 → fixed in 5.2.9

Description

Description ----------- The ability to enumerate users was possible without relevant permissions due to different exception messages depending on whether the user existed or not. It was also possible to enumerate users by using a timing attack, by comparing time elapsed when authenticating an existing user and authenticating a non-existing user. Resolution ---------- We now ensure that 403s are returned whether the user exists or not if the password is invalid or if the user does not exist. The patch for this issue is available here for branch 3.4. Credits ------- I would like to thank James Isaac and Mathias Brodala for reporting the issue and Robin Chalas for fixing the issue.

Related

Alias · CVE (1)

  • CVE-2021-21424 Symfony is a PHP framework for web and console applications and a set of reusable PHP components. vulnerability

Weakness · CWE (2)

  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor weakness
  • CWE-203 Observable Discrepancy weakness

References