What is CVE-2023-45811?

CVE-2023-45811 is a high-severity vulnerability in Relative Synchrony, classified under Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution). CVSS score: 8.1/10. Published 2023-10-17.

How severe is CVE-2023-45811?

High severity. CVSS v3 base score is 8.1 out of 10.

Prototype Pollution in Relative Synchrony

CVE-2023-45811

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

Vulnerability class: Prototype Pollution

EPSS: 0.004 (34.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H.

Affected products

Relative Synchrony — versions >= 2.0.1, < 2.4.4

Weakness classification (CWE)

CWE-1321 — Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution)

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)
security-advisories@github.com (x_refsource_MISC, Broken Link)

Frequently asked questions

What is CVE-2023-45811?: CVE-2023-45811 is a high-severity vulnerability in Relative Synchrony, classified under Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution). CVSS score: 8.1/10. Published 2023-10-17.
How severe is CVE-2023-45811?: High severity. CVSS v3 base score is 8.1 out of 10.