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CVE-2023-45811

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Date: October 17, 2023

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

Language: JS

Severity Score

Related Resources (6)

https://nvd.nist.gov/vuln/detail/CVE-2023-45811
https://github.com/relative/synchrony/security/advisories/GHSA-jg82-xh3w-rhxx
https://github.com/relative/synchrony/security/advisories/src/transformers/literalmap.ts
https://github.com/relative/synchrony/commit/b583126be94c4db7c5a478f1c5204bfb4162cf40
https://github.com/relative/synchrony
https://www.mend.io/vulnerability-database/CVE-2023-45811

Severity Score

Weakness Type (CWE)

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

CWE-1321

Top Fix

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Upgrade to version deobfuscator - 2.4.4

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): CHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

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