CVE-2021-23543 — CRITICAL (9.8)

Vulnerability Description

All versions of package realms-shim are vulnerable to Sandbox Bypass via a Prototype Pollution attack vector.

CVSS Score

9.8

CRITICAL

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Agoric	Realms-Shim	All versions

Related Weaknesses (CWE)

CWE-1321

References

https://snyk.io/vuln/SNYK-JS-REALMSSHIM-2309908ExploitThird Party Advisory
https://www.npmjs.com/package/realms-shimProductThird Party Advisory
https://snyk.io/vuln/SNYK-JS-REALMSSHIM-2309908ExploitThird Party Advisory
https://www.npmjs.com/package/realms-shimProductThird Party Advisory

FAQ

What is CVE-2021-23543?

CVE-2021-23543 is a vulnerability with a CVSS score of 9.8 (CRITICAL). All versions of package realms-shim are vulnerable to Sandbox Bypass via a Prototype Pollution attack vector.

How severe is CVE-2021-23543?

CVE-2021-23543 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2021-23543?

Check the references section above for vendor advisories and patch information. Affected products include: Agoric Realms-Shim.