CVE-2023-45811

Prototype pollution vulnerability leading to arbitrary code execution in synchrony deobfuscator

CVSS 8.2 HIGHEPSS 0.4%CWE-1321

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 8.2EPSS 0.4%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

17 Oct 2023Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Affected products

relative · synchrony

Want to know if your infrastructure is exposed to this?

Talk to TrueHacking →

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