Symfony Authentication Bypass

緊急 9.8CVE-2018-11407 · GHSA-35c5-28pg-2qg4 · 13/06/2018 公開 · 17/06/2026 更新

要点

CVE-2018-11407 は symfony/security, symfony/security-core, symfony/symfony に影響する深刻度「緊急」 (CVSS 9.8) の脆弱性です。
今後30日間に悪用される確率（EPSS）：2.4%（全脆弱性の 83.8% より高い）。
対処：2.8.37, 3.3.17, 3.4.7, 4.0.7 以降に更新してください。

パッケージ	影響を受けるバージョン	修正済みバージョン
symfony/security Packagist	`≥ 2.8.0, < 2.8.37≥ 3.0.0, < 3.3.17≥ 3.4.0, < 3.4.7≥ 4.0.0, < 4.0.7`	`2.8.373.3.173.4.74.0.7`
symfony/security-core Packagist	`≥ 2.8.0, < 2.8.37≥ 3.0.0, < 3.3.17≥ 3.4.0, < 3.4.7≥ 4.0.0, < 4.0.7`	`2.8.373.3.173.4.74.0.7`
symfony/symfony Packagist	`≥ 2.8.0, < 2.8.37≥ 3.0.0, < 3.3.17≥ 3.4.0, < 3.4.7≥ 4.0.0, < 4.0.7`	`2.8.373.3.173.4.74.0.7`
symfony sensiolabs	`≥ 2.8.0, < 2.8.37≥ 3.3.0, < 3.3.17≥ 3.4.0, < 3.4.7≥ 4.0.0, < 4.0.7`	`2.8.373.3.173.4.74.0.7`

概要

An issue was discovered in the LDAP component in Symfony 2.8.x before 2.8.37, 3.3.x before 3.3.17, 3.4.x before 3.4.7, and 4.0.x before 4.0.7. It allows remote attackers to bypass authentication by logging in with a "null" password and valid username, which triggers an unauthenticated bind. NOTE: this issue exists because of an incomplete fix for CVE-2016-2403.

NVD の説明

An issue was discovered in the Ldap component in Symfony 2.8.x before 2.8.37, 3.3.x before 3.3.17, 3.4.x before 3.4.7, and 4.0.x before 4.0.7. It allows remote attackers to bypass authentication by logging in with a "null" password and valid username, which triggers an unauthenticated bind. NOTE: this issue exists because of an incomplete fix for CVE-2016-2403.