Publish GHSA-9jxc-qjr9-vjxq

2026-05-22 18:04:22 -07:00 · 2024-07-09 17:49:27 +00:00
parent 6f50d61d54
commit e9d65e81d8
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+{
+  "schema_version": "1.4.0",
+  "id": "GHSA-9jxc-qjr9-vjxq",
+  "modified": "2024-07-09T17:48:21Z",
+  "published": "2024-07-09T17:48:21Z",
+  "aliases": [
+    "CVE-2024-39698"
+  ],
+  "summary": "electron-updater Code Signing Bypass on Windows",
+  "details": "### Observations\nThe file `packages/electron-updater/src/windowsExecutableCodeSignatureVerifier.ts` implements the signature validation routine for Electron applications on Windows. It executes the following command in a new shell (`process.env.ComSpec` on Windows, usually `C:\\Windows\\System32\\cmd.exe`):\n\nhttps://github.com/electron-userland/electron-builder/blob/140e2f0eb0df79c2a46e35024e96d0563355fc89/packages/electron-updater/src/windowsExecutableCodeSignatureVerifier.ts#L35-L41\n\nBecause of the surrounding shell, a first pass by `cmd.exe` expands any environment variable found in command-line above.\n\n### Exploitation\n\nThis creates a situation where `verifySignature()` can be tricked into validating the certificate of a different file than the one that was just downloaded. If the step is successful, the malicious update will be executed even if its signature is invalid. \n\n### Impact\n\nThis attack assumes a compromised update manifest (server compromise, Man-in-the-Middle attack if fetched over HTTP, Cross-Site Scripting to point the application to a malicious updater server, etc.).\n\n### Patch\n\nThis vulnerability was patched in #8295, by comparing the path in the output of `Get-AuthenticodeSignature` with the intended one. The patch is available starting from 6.3.0-alpha.6.",
+  "severity": [
+    {
+      "type": "CVSS_V3",
+      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H"
+    },
+    {
+      "type": "CVSS_V4",
+      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
+    }
+  ],
+  "affected": [
+    {
+      "package": {
+        "ecosystem": "npm",
+        "name": "electron-updater"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "0"
+            },
+            {
+              "fixed": "6.3.0-alpha.6"
+            }
+          ]
+        }
+      ],
+      "database_specific": {
+        "last_known_affected_version_range": "<= 6.3.0-alpha.5"
+      }
+    }
+  ],
+  "references": [
+    {
+      "type": "WEB",
+      "url": "https://github.com/electron-userland/electron-builder/security/advisories/GHSA-9jxc-qjr9-vjxq"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/electron-userland/electron-builder/pull/8295"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/electron-userland/electron-builder/commit/ac2e6a25aa491c1ef5167a552c19fc2085cd427f"
+    },
+    {
+      "type": "PACKAGE",
+      "url": "https://github.com/electron-userland/electron-builder"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/electron-userland/electron-builder/blob/140e2f0eb0df79c2a46e35024e96d0563355fc89/packages/electron-updater/src/windowsExecutableCodeSignatureVerifier.ts#L35-L41"
+    }
+  ],
+  "database_specific": {
+    "cwe_ids": [
+      "CWE-154"
+    ],
+    "severity": "HIGH",
+    "github_reviewed": true,
+    "github_reviewed_at": "2024-07-09T17:48:21Z",
+    "nvd_published_at": null
+  }
+}