Multiple vulnerabilities in HashiCorp Nomad and Nomad Enterprise



Risk High
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2020-7218
CVE-2020-7956
CWE-ID CWE-400
CWE-295
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Nomad
Server applications / Virtualization software

Nomad Enterprise
Web applications / Modules and components for CMS

Vendor HashiCorp

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Resource exhaustion

EUVDB-ID: #VU24939

Risk: Medium

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

CVE-ID: CVE-2020-7218

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 unbounded resource usage via HTTP and RPC services. A remote attacker can trigger resource exhaustion and crash the target server.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Nomad: 0.1.0 - 0.10.2

Nomad Enterprise: 0.1.0 - 0.10.2

CPE2.3 External links

https://github.com/hashicorp/nomad/issues/7002
https://www.hashicorp.com/blog/category/nomad/


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) Improper Certificate Validation

EUVDB-ID: #VU24940

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2020-7956

CWE-ID: CWE-295 - Improper Certificate Validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a man-in-the-middle (MiTM) attack.

The vulnerability exists due to the affected software incorrectly validate role/region associated with TLS certificates used for mTLS RPC. A remote attacker can supply a specially crafted TLS certificate, perform a man-in-the-middle attack and escalate privileges on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Nomad: 0.1.0 - 0.10.2

Nomad Enterprise: 0.1.0 - 0.10.2

CPE2.3 External links

https://github.com/hashicorp/nomad/issues/7003
https://www.hashicorp.com/blog/category/nomad/


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.



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