Multiple vulnerabilities in HashiCorp Consul and Consul Enterprise

Published: 2020-02-05

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2020-7955 CVE-2020-7219
CWE-ID	CWE-200 CWE-400
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Consul Server applications / Other server solutions Consul Enterprise Server applications / Other server solutions
Vendor	HashiCorp

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Information disclosure

EUVDB-ID: #VU24941

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-7955

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

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

The vulnerability exists due to the affected software does not uniformly enforce ACLs across all API endpoints "v1/agent/health/service/*". A remote attacker can gain unauthorized access to sensitive information on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Consul: 1.4.1 - 1.6.2

Consul Enterprise: 1.4.1 - 1.6.2

External links

http://github.com/hashicorp/consul/issues/7160
http://www.hashicorp.com/blog/category/consul/

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.

2) Resource exhaustion

EUVDB-ID: #VU24942

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-7219

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to the HTTP/RPC services allowed unbounded resource usage. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.