GHSA-R4PF-3V7R-HH55

Vulnerability from github – Published: 2024-03-04 20:42 – Updated: 2024-03-06 21:36
VLAI?
Summary
electron-builder's NSIS installer - execute arbitrary code on the target machine (Windows only)
Details

Impact

Windows-Only: The NSIS installer makes a system call to open cmd.exe via NSExec in the .nsh installer script. NSExec by default searches the current directory of where the installer is located before searching PATH. This means that if an attacker can place a malicious executable file named cmd.exe in the same folder as the installer, the installer will run the malicious file.

Patches

Fixed in https://github.com/electron-userland/electron-builder/pull/8059

Workarounds

None, it executes at the installer-level before the app is present on the system, so there's no way to check if it exists in a current installer.

References

https://cwe.mitre.org/data/definitions/426.html https://cwe.mitre.org/data/definitions/427

Severity ?
7.3 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Show details on source website
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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "app-builder-lib"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "24.13.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-27303"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-426",
      "CWE-427"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-03-04T20:42:45Z",
    "nvd_published_at": "2024-03-06T19:15:08Z",
    "severity": "HIGH"
  },
  "details": "### Impact\nWindows-Only: The NSIS installer makes a system call to open cmd.exe via NSExec in the `.nsh` installer script. NSExec by default searches the current directory of where the installer is located before searching `PATH`. This means that if an attacker can place a malicious executable file named cmd.exe in the same folder as the installer, the installer will run the malicious file.\n\n### Patches\nFixed in https://github.com/electron-userland/electron-builder/pull/8059\n\n### Workarounds\nNone, it executes at the installer-level before the app is present on the system, so there\u0027s no way to check if it exists in a current installer.\n\n### References\nhttps://cwe.mitre.org/data/definitions/426.html\nhttps://cwe.mitre.org/data/definitions/427",
  "id": "GHSA-r4pf-3v7r-hh55",
  "modified": "2024-03-06T21:36:08Z",
  "published": "2024-03-04T20:42:45Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/electron-userland/electron-builder/security/advisories/GHSA-r4pf-3v7r-hh55"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-27303"
    },
    {
      "type": "WEB",
      "url": "https://github.com/electron-userland/electron-builder/pull/8059"
    },
    {
      "type": "WEB",
      "url": "https://github.com/electron-userland/electron-builder/commit/8f4acff3c2d45c1cb07779bb3fe79644408ee387"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/electron-userland/electron-builder"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "electron-builder\u0027s NSIS installer - execute arbitrary code on the target machine (Windows only)"
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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