Vulnerability identifier: #VU21931

Vulnerability risk: High

CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Realm Shim
Web applications / Modules and components for CMS

Vendor: Agoric Systems Operating Company

Description
 The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to an error in the transformation pipeline that exposed a primal-Realm object to one of the transform functions. A remote attacker can escape the sandbox, compromise the Realm which created it and compromise the application.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Realm Shim: 1.1.0 - 1.2.0

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External links
http://www.npmjs.com/advisories/1218
http://github.com/Agoric/realms-shim/security/advisories/GHSA-7cg8-pq9v-x98q

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.