文件
websafe-kb/07-framework-security/frameworks/symfony/cases/symfony-cve-2021-21424.md

7.1 KiB

title, system_id, category, advisory_mode, published_date, updated_date, severity, exploit_status, source_confidence, verification_status, verification_mode, artifact_mode, last_run_id, target_types, allow_public_validation, authorization_prerequisite, minimal_validation, aliases, affected_versions, fixed_versions, secure_code_topics, primary_source
title system_id category advisory_mode published_date updated_date severity exploit_status source_confidence verification_status verification_mode artifact_mode last_run_id target_types allow_public_validation authorization_prerequisite minimal_validation aliases affected_versions fixed_versions secure_code_topics primary_source
Prevent user enumeration using Guard or the new Authenticator-based Security symfony frameworks core 2021-05-13T20:23:02Z 2026-03-13T22:16:14.858636Z low unknown official triage-manual synthetic synthetic
lab-local
lab-public
authorized-third-party
yes, with ownership or explicit authorization asset ownership proof or explicit written authorization read-only probe, controlled payload, reversible test
BIT-symfony-2021-21424
CVE-2021-21424
GHSA-5pv8-ppvj-4h68
v2.8.0
v2.8.1
v2.8.10
v2.8.11
v2.8.12
v2.8.13
v2.8.14
v2.8.15
v2.8.16
v2.8.17
v2.8.18
v2.8.19
v2.8.2
v2.8.20
v2.8.21
v2.8.22
v2.8.23
v2.8.24
v2.8.25
v2.8.26
5.2.8
3.4.48
4.4.23
2.10.7
2.11.3
1.29.2
1.31.1
3.4.49
4.4.24
5.2.9
xss-output-encoding
authz-server-side-recheck
path-traversal-guard
https://github.com/symfony/symfony/security/advisories/GHSA-5pv8-ppvj-4h68

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

本地实证状态

  • 实证状态: triage-manual
  • 实证方式: synthetic
  • Artifact 模式: synthetic
  • 最近运行: -
  • 浏览器证据: missing
  • Run Bundle: -

事件层

  • Canonical ID: symfony--CVE-2021-21424
  • 系统: symfony
  • 严重度: low
  • 来源置信度: official
  • 官方主源: https://github.com/symfony/symfony/security/advisories/GHSA-5pv8-ppvj-4h68
  • 影响版本: v2.8.0, v2.8.1, v2.8.10, v2.8.11, v2.8.12, v2.8.13, v2.8.14, v2.8.15, v2.8.16, v2.8.17
  • 修复版本: 5.2.8, 3.4.48, 4.4.23, 2.10.7, 2.11.3, 1.29.2, 1.31.1, 3.4.49, 4.4.24, 5.2.9

其他来源

实验层

  • 仅用于自有资产、测试环境或已明确授权目标。
  • 允许公网可达目标,但必须满足资产归属或明确授权前提。
  • 最小化验证方式: 最小化验证、只读探测、可审计回显、受控注入。
  • 若该案例涉及插件、模块或扩展,应同时检查供应链与升级策略。
  • 禁止场景: 无归属证明或无明确授权的公网目标;知名公共网站或与测试无关的第三方资产;会造成持久破坏、数据越权下载或不可回滚影响的动作

修复示例