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CVE-2016-2403 — Vulnerability in symfony/security-core — CVE Details

CRITICAL

Symfony Authentication Bypass

Published May 14, 2022Updated February 16, 2024Source: osv

Summary

Symfony before 2.8.6 and 3.x before 3.0.6 allows remote attackers to bypass authentication by logging in with an empty password and valid username, which triggers an unauthenticated bind.

Advisory Timeline

  • First published May 14, 2022 (1612 days ago).
  • Last revised February 16, 2024 — 643 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Composer
Update symfony/security-core to 3.0.6 or later
composer require "symfony/security-core:^3.0.6"
Composer
Update symfony/symfony to 2.8.6 or later
composer require "symfony/symfony:^2.8.6"
Composer
Update symfony/symfony to 3.0.6 or later
composer require "symfony/symfony:^3.0.6"
Composer
Update symfony/security-core to 2.8.6 or later
composer require "symfony/security-core:^2.8.6"
Composer
Update symfony/security to 2.8.6 or later
composer require "symfony/security:^2.8.6"
Composer
Update symfony/security to 3.0.6 or later
composer require "symfony/security:^3.0.6"

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (6)

Affects 1 ecosystem: packagist (3).

PackageEcosystemAffectedFixed In
symfony/security-core
packagist
v3.0.0, v3.0.1, v3.0.2, v3.0.3 (+2 more)3.0.6
symfony/symfony
packagist
v2.8.0, v2.8.1, v2.8.2, v2.8.3 (+2 more)2.8.6
symfony/symfony
packagist
v3.0.0, v3.0.1, v3.0.2, v3.0.3 (+2 more)3.0.6
symfony/security-core
packagist
v2.8.0, v2.8.1, v2.8.2, v2.8.3 (+2 more)2.8.6
symfony/security
packagist
v2.8.0, v2.8.1, v2.8.2, v2.8.3 (+2 more)2.8.6
symfony/security
packagist
v3.0.0, v3.0.1, v3.0.2, v3.0.3 (+2 more)3.0.6

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

  • CWE-287
    Improper AuthenticationMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 9.8 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Frequently Asked Questions

What is CVE-2016-2403?
Symfony Authentication Bypass This vulnerability has been assigned a severity rating of CRITICAL (CVSS score: 9.8/10).
How do I check if my project is affected by CVE-2016-2403?
CVE-2016-2403 affects symfony/security-core, symfony/symfony and symfony/security. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2016-2403 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
9.8

Exploitation is straightforward and causes maximum impact. Patch immediately.

Also Known As

GHSA-wvj5-r78r-hhfq

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