#VU53270 Spoofing attack in Nomad - CVE-2021-32575

Vulnerability identifier: #VU53270

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-32575

CWE-ID: CWE-451

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Nomad
Server applications / Virtualization software

Vendor: HashiCorp

Description

The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due to incorrect processing of user-supplied data. A remote attacker can perform ARP spoofing attacks against other tasks on the same node.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Nomad: 0.0.0, 0.1.0 - 0.12.11, 0.2.0 - 0.2.3, 0.3.0 - 0.3.2, 0.4.0 - 0.4.3, 0.5.0 - 0.5.6, 0.6.0 - 0.6.3, 0.7.0 - 0.7.1, 0.8.0 - 0.8.7, 0.9.0 - 0.9.7, 1.0.0 - 1.0.4

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External links
https://github.com/hashicorp/nomad/releases/tag/v1.0.5

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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.