Vulnerability identifier: #VU18016

Vulnerability risk: High

CVSSv3.1: 8.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2019-8336

CWE-ID: CWE-287

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Consul
Server applications / Other server solutions

Vendor: HashiCorp

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to a logical error when processing replications. A remote attacker can supply secret "<hidden>, bypass authentication process and gain unauthorized access to the application.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Consul: 1.4.0 - 1.4.2

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External links
http://github.com/hashicorp/consul/issues/5423

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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. However, proof of concept for this vulnerability is available.