CVE-2026-48025— Nebula Mesh 签名后解密的 CA 私钥驻留堆内存漏洞
可能的 ATT&CK 技术 1AI
T1005 · Data from Local System影响版本矩阵 1
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| juev | nebula-mesh | < 0.3.7 | affected |
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一、 漏洞 CVE-2026-48025 基础信息
漏洞信息
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Vulnerability Title
nebula-mesh: Decrypted CA private key persists in heap after signing
来源: CVE Program / CVE List V5
Vulnerability Description
nebula-mesh is a self-hosted control plane for Slack Nebula mesh virtual private network. Prior to version 0.3.7, internal/pki/resolver.go:36-64 constructs a CAManager with the plaintext ed25519.PrivateKey after unwrapping via the master key; internal/pki/ca.go:13-16 stores it. Callers at internal/api/enroll.go:116, internal/api/updates.go:297, and internal/api/mobile_bundle.go:40 use the manager for one Sign() and drop the reference on function return — but the underlying slice contents are not wiped before release. The keystore package's contract (internal/keystore/keystore.go doc: "Callers MUST zeroise the returned plaintext DEK as soon as it is no longer needed") is not met by the CAManager consumer. Decrypted CA private keys persist in process heap until Go's GC scavenges the underlying slice — minutes to hours under load, indefinitely on idle servers. This issue has been patched in version 0.3.7.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
来源: CVE Program / CVE List V5
Vulnerability Type
在释放前清理堆内存不恰当(堆检查)
来源: CVE Program / CVE List V5
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| juev | nebula-mesh | < 0.3.7 | - |
二、漏洞 CVE-2026-48025 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-48025 补丁与修复 (1)
CVE-2026-48025 厂商安全公告 (1)
CVE-2026-48025 厂商页面 (1)
同批安全公告 · juev · 2026-07-28 · 共 6 条
| CVE-2026-49258 | 8.8 HIGH | Nebula Mesh Web UI 缺乏所有权检查，导致跨运营商访问主机和网络 |
| CVE-2026-47726 | 7.1 HIGH | nebula-mesh 审计日志接口信息泄露漏洞 |
| CVE-2026-47725 | 6.9 MEDIUM | nebula-mesh Web UI 存在 CSRF漏洞 |
| CVE-2026-47768 | 5.5 MEDIUM | Nebula Mesh Operator API密钥通过重定向URL泄露 |
| CVE-2026-48058 | 4.6 MEDIUM | nebula-mesh 会话和OIDC状态Cookie缺少Secure属性 |
IV. Related Vulnerabilities
V. Comments for CVE-2026-48025
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