Vulnerability · Published Aug 15, 2024 · Assigned by GitHub_M
CVE-2024-43373webcrack has an Arbitrary File Write Vulnerability on Windows when Parsing and Saving a Malicious Bundle
High 7.7
In plain English
A high-severity improper input validation in webcrack from j4k0xb. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 39% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
webcrack is a tool for reverse engineering javascript. An arbitrary file write vulnerability exists in the webcrack module when processing specifically crafted malicious code on Windows systems. This vulnerability is triggered when using the unpack bundles feature in conjunction with the saving feature. If a module name includes a path traversal sequence with Windows path separators, an attacker can exploit this to overwrite files on the host system. This vulnerability allows an attacker to write arbitrary `.js` files to the host system, which can be leveraged to hijack legitimate Node.js modules to gain arbitrary code execution. This vulnerability has been patched in version 2.14.1.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | webcrack | 2.14.1 | GHSA-ccqh-278p-xq6w |
Affected products (as reported)
Weakness: CWE-20, CWE-22 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:L
References
- https://github.com/j4k0xb/webcrack/security/advisories/GHSA-ccqh-278p-xq6w x_refsource_CONFIRM
- https://github.com/j4k0xb/webcrack/commit/4bc5c6f353012ee7edc2cb39d01a728ab7426999 x_refsource_MISC
- https://github.com/j4k0xb/webcrack/blob/241f9469e6401f3dabc6373233d85a5e76966b54/packages/webcrack/src/unpack/bundle.ts#L79 x_refsource_MISC