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CVE-2020-25864

Vulnerability in HashiCorp Consul (CVE-2020-25864)

Summary

Vulnerability in HashiCorp Consul (CVE-2020-25864). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to 1.9.5 or later.

Original description

The description as published by the source.

HashiCorp Consul and Consul Enterprise up to version 1.9.4 key-value (KV) raw mode was vulnerable to cross-site scripting. Fixed in 1.9.5, 1.8.10 and 1.7.14.

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-2020-25864 has been found in HashiCorp Consul.
Risk of unauthorized operations or information disclosure.
What to do: upgrade HashiCorp Consul to 1.9.5 or later.
If unsure, ask your IT team or search "HashiCorp Consul CVE-2020-25864" on the vendor's site.

CVE-2020-25864 (HashiCorp Consul)
Attack vector: remote (network-reachable) / unauthenticated
Patched: 1.9.5 — 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 Consul.

📍 Affected scope

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

🔥 Severity

Severity: ?. Risk of unauthorized operations or information disclosure.

🔧 How to fix

Update to 1.9.5.

🛡️ 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. 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 Consul を使っているサービスとバージョンを洗い出す。

  2. 2
    Apply patch patch 
    Upgrade HashiCorp Consul to 1.9.5

    ステージング環境で 1.9.5 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. 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。

Affected packages

Bitnami consul
[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.7.14"},{"introduced":"1.8.0"},{"fixed":"1.8.10"},{"introduced":"1.9.0"},{"fixed":"1.9.5"}]}]
Go github.com/hashicorp/consul
[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.7.14"}]}]

Fix status by distribution

Fixed packages published by each distribution for this CVE

References

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