#VU47415 Information disclosure in NATS - The Cloud Native Messaging System products - CVE-2020-26149

Vulnerability identifier: #VU47415

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-26149

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
nats.ws
Web applications / Modules and components for CMS
nats.js
Web applications / Modules and components for CMS
nats.deno
Web applications / Modules and components for CMS

Vendor: NATS - The Cloud Native Messaging System

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application. A remote attacker can gain unauthorized access to sensitive information on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

nats.ws: 1.0.0-1 - 1.0.0-110

nats.js: 0.2.0 - 2.0.0-206

nats.deno: 0.1.0-0 - 1.0.0-8

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External links
https://www.openwall.com/lists/oss-security/2020/09/30/3
https://github.com/nats-io/nats.deno/compare/v1.0.0-8...v1.0.0-9
https://github.com/nats-io/nats.ws/commit/0a37ac2a411ff63f0707cda69a268c5fc4079eb7
https://www.npmjs.com/advisories/1567

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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.