Vulnerability · Published Oct 17, 2023 · Assigned by GitHub_M
CVE-2023-45811Prototype pollution vulnerability leading to arbitrary code execution in synchrony deobfuscator
High 8.2
In plain English
A high-severity prototype pollution in synchrony from relative. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 37% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Synchrony deobfuscator is a javascript cleaner & deobfuscator. A `__proto__` pollution vulnerability exists in versions before v2.4.4. Successful exploitation could lead to arbitrary code execution. A `__proto__` pollution vulnerability exists in the `LiteralMap` transformer allowing crafted input to modify properties in the Object prototype. A fix has been released in `deobfuscator@2.4.4`. Users are advised to upgrade. Users unable to upgrade should launch node with the [--disable-proto=delete][disable-proto] or [--disable-proto=throw][disable-proto] flags
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | deobfuscator | 2.4.4 | GHSA-jg82-xh3w-rhxx |
Affected products (as reported)
Weakness: CWE-1321 · Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
References
- https://github.com/relative/synchrony/security/advisories/GHSA-jg82-xh3w-rhxx x_refsource_CONFIRM
- https://github.com/relative/synchrony/commit/b583126be94c4db7c5a478f1c5204bfb4162cf40 x_refsource_MISC
- https://github.com/relative/synchrony/security/advisories/src/transformers/literalmap.ts x_refsource_MISC