Vulnerability · Published Mar 6, 2024 · Assigned by GitHub_M
CVE-2024-27303electron-builder's NSIS installer - execute arbitrary code on the target machine (Windows only)
High 7.3
In plain English
A high-severity uncontrolled search path in electron-builder from electron-userland. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 21% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
electron-builder is a solution to package and build a ready for distribution Electron, Proton Native app for macOS, Windows and Linux. A vulnerability that only affects eletron-builder prior to 24.13.2 in Windows, 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. Version 24.13.2 fixes this issue. No known workaround exists. The code 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | app-builder-lib | 24.13.2 | GHSA-r4pf-3v7r-hh55 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| electron-userland | electron-builder | < 24.13.2 |
Weakness: CWE-426, CWE-427 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
References
- https://github.com/electron-userland/electron-builder/security/advisories/GHSA-r4pf-3v7r-hh55 x_refsource_CONFIRM
- https://github.com/electron-userland/electron-builder/pull/8059 x_refsource_MISC
- https://github.com/electron-userland/electron-builder/commit/8f4acff3c2d45c1cb07779bb3fe79644408ee387 x_refsource_MISC