CVE-2026-71417— Lemur 允许任意用户吊销证书
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一、 漏洞 CVE-2026-71417 基础信息
漏洞信息
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Vulnerability Title
Lemur: Any user can revoke arbitrary certificates at the CA by uploading a duplicate record and revoking it
来源: CVE Program / CVE List V5
Vulnerability Description
Lemur manages TLS certificate creation. Prior to 1.9.3, POST /api/1/certificates/upload allowed a non-read-only user to create a duplicate row using another certificate body, authority_id, serial, or external_id without requiring permission on the underlying authority. PUT /api/1/certificates//revoke authorized the caller against only the selected Lemur row, so the creator of the duplicate bypassed CertificatePermission. The duplicate had no cert.endpoints, which also bypassed the safeguard that prevents revocation of deployed certificates. Issuer plugins then revoked the real CA-side certificate using certificate.body or external_id under the stored authority credentials. An attacker could therefore revoke arbitrary managed certificates and cause fleet-wide TLS denial of service. The fix rejects duplicate authority_id and serial identities, requires authority access on upload, and checks every matching row during revocation. This issue is fixed in version 1.9.3.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:H
来源: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
来源: CVE Program / CVE List V5
受影响产品
二、漏洞 CVE-2026-71417 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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Qwen3.6-35B-A3B · 5621 chars
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三、漏洞 CVE-2026-71417 的情报信息
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CVE-2026-71417 补丁与修复 (1)
CVE-2026-71417 厂商安全公告 (1)
CVE-2026-71417 厂商页面 (1)
同批安全公告 · Netflix · 2026-08-18 · 共 14 条
| CVE-2026-55166 | 9.9 CRITICAL | Lemur：SSO用户通过SSRF和IDOR导致AWS IAM权限提升 |
| CVE-2026-48508 | 8.8 HIGH | Lemur 严格角色权限绕过漏洞 |
| CVE-2026-71308 | 8.1 HIGH | Lemur 未检查 replaces[] 导致通知静默及证书自动轮换劫持漏洞 |
| CVE-2026-71307 | 7.7 HIGH | Lemur 用户可通过目标 API 读取明文凭证 |
| CVE-2026-71303 | 7.7 HIGH | Lemur 未完全修复 CVE-2026-55166 导致非管理员可绕过白名单 |
| CVE-2026-70666 | 7.4 HIGH | Lemur ACME客户端 SSRF漏洞 |
| CVE-2026-71317 | 6.5 MEDIUM | Lemur 子CA创建未检查父权限 |
| CVE-2026-70667 | 6.3 MEDIUM | Lemur证书吊销检查SSRF防护绕过漏洞 |
| CVE-2026-55162 | 6.3 MEDIUM | Lemur 上传证书后认证SSRF漏洞 |
| CVE-2026-55163 | 6.3 MEDIUM | Lemur PUT /api/1/roles/<id> 权限提升漏洞 |
| CVE-2026-55164 | 4.9 MEDIUM | Lemur 用户更新路径明文密码存储漏洞 |
| CVE-2026-55165 | 4.8 MEDIUM | Lemur JWT验证器信任攻击者提供的alg参数导致账户接管 |
| CVE-2026-71322 | 4.3 MEDIUM | Lemur: 缺少证书导出API授权检查漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2026-71417
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