Vulnerability CVE-2023-45811
Published: 2023-10-17   Modified: 2023-10-18

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

 References:
https://github.com/relative/synchrony/commit/b583126be94c4db7c5a478f1c5204bfb4162cf40
https://github.com/relative/synchrony/security/advisories/GHSA-jg82-xh3w-rhxx
https://github.com/relative/synchrony/security/advisories/src/transformers/literalmap.ts
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