CVE-2021-3283 Improper Privilege Management in HashiCorp Nomad

What is CVE-2021-3283?

CVE-2021-3283 is a high-severity missing authorization vulnerability in n/a, published on 1 Feb 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

HashiCorp Nomad and Nomad Enterprise up to 0.12.9 exec and java task drivers can access processes associated with other tasks on the same node. Fixed in 0.12.10, and 1.0.3.

Which versions are affected by CVE-2021-3283?

5 open source packages ship an affected version, including github.com/hashicorp/nomad. It affects 1 product.

Products include Hashicorp Nomad.

How do I fix CVE-2021-3283?

Upgrade github.com/hashicorp/nomad to a fixed version for your release line: 0.12.10 or 1.0.3.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2021-3283 being exploited?

There is no known exploitation of CVE-2021-3283 in the wild and no public exploit code.

Other vulnerabilities in n/a

• CVE-2023-1782 Nomad Unauthenticated Client Agent HTTP Request Privilege Escalation Critical 10.0
• CVE-2022-30324 Privilege escalation in Hashicorp Nomad Critical 9.8
• CVE-2020-7956 Improper Certificate Validation in HashiCorp Nomad Critical 9.8
• CVE-2019-12618 Hashicorp Nomad Access Control Issues Critical 9.8
• CVE-2020-27195 Use After Free in HashiCorp Nomad Critical 9.1

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-35qp-xq9f-2rjx, GO-2022-0622, UBUNTU-CVE-2021-3283.