CVE-2023-45811
A `__proto__` pollution vulnerability exists in versions before v2.4.4.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.41%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.41% probability · 35th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-1321
- Affected
- relative/synchrony
- Source
- security-advisories@github.com
References
- https://github.com/relative/synchrony/commit/b583126be94c4db7c5a478f1c5204bfb4162cf40Patch
- https://github.com/relative/synchrony/security/advisories/GHSA-jg82-xh3w-rhxxExploit, Vendor Advisory
- https://github.com/relative/synchrony/security/advisories/src/transformers/literalmap.tsBroken Link
- https://github.com/relative/synchrony/commit/b583126be94c4db7c5a478f1c5204bfb4162cf40Patch
- https://github.com/relative/synchrony/security/advisories/GHSA-jg82-xh3w-rhxxExploit, Vendor Advisory
- https://github.com/relative/synchrony/security/advisories/src/transformers/literalmap.tsBroken Link
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.