Package Instance

ASAR Integrity bypass via filetype confusion in electron
This only impacts apps that have the `embeddedAsarIntegrityValidation` and `onlyLoadAppFromAsar` [fuses](https://www.electronjs.org/docs/latest/tutorial/fuses) enabled.  Apps without these fuses enabled are not impacted.  This issue is specific to macOS as these fuses are only currently supported on macOS.

Specifically this issue can only be exploited if your app is launched from a filesystem the attacker has write access too.  i.e. the ability to edit files inside the `resources` folder in your app installation on Windows which these fuses are supposed to protect against.

Electron vulnerable to Heap Buffer Overflow in NativeImage
### Impact
The `nativeImage.createFromPath()` and `nativeImage.createFromBuffer()` functions call a function downstream that is vulnerable to a heap buffer overflow. An Electron program that uses either of the affected functions is vulnerable to a buffer overflow if an attacker is in control of the image's height, width, and contents.

### Workaround
There are no app-side workarounds for this issue. You must update your Electron version to be protected.

### Patches

- `v28.3.2`
- `v29.3.3`
- `v30.0.3`

### For More Information

If you have any questions or comments about this advisory, email us at [security@electronjs.org](mailto:security@electronjs.org).

Electron has ASAR Integrity Bypass via resource modification
### Impact
This only impacts apps that have the `embeddedAsarIntegrityValidation` and `onlyLoadAppFromAsar` [fuses](https://www.electronjs.org/docs/latest/tutorial/fuses) enabled.  Apps without these fuses enabled are not impacted.

Specifically this issue can only be exploited if your app is launched from a filesystem the attacker has write access too.  i.e. the ability to edit files inside the `resources` folder in your app installation on Windows which these fuses are supposed to protect against.

### Workarounds
There are no app side workarounds, you must update to a patched version of Electron.

### Fixed Versions
* `38.0.0-beta.6`
* `37.3.1`
* `36.8.1`
* `35.7.5`

### For more information
If you have any questions or comments about this advisory, email us at [security@electronjs.org](mailto:security@electronjs.org)

Improper Control of Generation of Code ('Code Injection')
Electron is a framework which lets you write cross-platform desktop applications using JavaScript, HTML and CSS. Electron apps that are launched as command line executables are impacted. Specifically this issue can only be exploited if the following conditions are met: 1. The app is launched with an attacker-controlled working directory and 2. The attacker has the ability to write files to that working directory. This makes the risk quite low, in fact normally issues of this kind are considered outside of our threat model as similar to Chromium we exclude Physically Local Attacks but given the ability for this issue to bypass certain protections like ASAR Integrity it is being treated with higher importance. This issue has been fixed in versions:`26.0.0-beta.13`, `25.4.1`, `24.7.1`, `23.3.13`, and `22.3.19`. There are no app side workarounds, users must update to a patched version of Electron.