Vulnerability in HashiCorp Nomad (CVE-2020-7956)

Summary

Vulnerability in HashiCorp Nomad (CVE-2020-7956). Successful exploitation can lead to full system takeover. Mitigation: upgrade to 0.10.3 or later.

Original description

The description as published by the source.

HashiCorp Nomad and Nomad Enterprise up to 0.10.2 incorrectly validated role/region associated with TLS certificates used for mTLS RPC, and were susceptible to privilege escalation. Fixed in 0.10.3.

Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV

Auto-generated summary

Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.

A vulnerability tracked as CVE-2020-7956 has been found in HashiCorp Nomad.
Successful exploitation can lead to full system takeover.
What to do: upgrade HashiCorp Nomad to 0.10.3 or later.
If unsure, ask your IT team or search "HashiCorp Nomad CVE-2020-7956" on the vendor's site.

CVE-2020-7956 (HashiCorp Nomad)
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Patched: 0.10.3 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.

❓ What is the problem

A vulnerability (unclassified) exists in HashiCorp Nomad.

📍 Affected scope

Check the vendor advisory for the affected versions of HashiCorp Nomad.

🔥 Severity

Severity: ?. Successful exploitation can lead to full system takeover.

🔧 How to fix

Update to 0.10.3.

🛡️ Workaround

Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.

🔍 Detection

Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

1
Identify exposure identify
```
Audit SBOM/dependencies for affected components.
```
資産台帳・SBOM・依存マニフェストで HashiCorp Nomad を使っているサービスとバージョンを洗い出す。
2
Apply patch patch
```
Upgrade HashiCorp Nomad to 0.10.3
```
ステージング環境で 0.10.3 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
3
Post-deployment verification verify
```
Confirm patched version is live in production
```
パッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。

References

advisory github.com
advisory hashicorp.com