Vulnerability in helm.sh/helm/v3 (CVE-2020-15186)
Summary
Vulnerability in helm.sh/helm/v3 (CVE-2020-15186). Risk of unauthorized operations or information disclosure. Exploitable via name. Mitigation: upgrade to 3.3.2 or later.
Original description
The description as published by the source.
In Helm before versions 2.16.11 and 3.3.2 plugin names are not sanitized properly. As a result, a malicious plugin author could use characters in a plugin name that would result in unexpected behavior, such as duplicating the name of another plugin or spoofing the output to helm --help. This issue has been patched in Helm 3.3.2. A possible workaround is to not install untrusted Helm plugins. Examine the name field in the plugin.yaml file for a plugin, looking for characters outside of the [a-zA-Z0-9._-] range.
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-2020-15186 has been found in helm.sh/helm/v3.
Attackers can target a specific entry point like name over the network to misuse the product.
Risk of unauthorized operations or information disclosure.
What to do: upgrade helm.sh/helm/v3 to 3.3.2 or later.
If unsure, ask your IT team or search "helm.sh/helm/v3 CVE-2020-15186" on the vendor's site.
CVE-2020-15186 (helm.sh/helm/v3) — CWE-20
Attack vector: remote (network-reachable) / no user interaction
Attack surface: name / plugin.yaml
Patched: 3.3.2 — 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.
A vulnerability (CWE-20) exists in helm.sh/helm/v3. Attackers reach the vulnerable code path via name.
Check the vendor advisory for the affected versions of helm.sh/helm/v3. Attack surface: name / plugin.yaml.
Severity: ?. Risk of unauthorized operations or information disclosure.
Update to 3.3.2.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'helm.sh/helm/v3' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
grep -r 'helm.sh/helm/v3' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
helm.sh/helm/v3を grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade helm.sh/helm/v3 to 3.3.2ステージング環境で 3.3.2 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。
-
3Post-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
References
- advisory github.com
- advisory nvd.nist.gov
- package github.com
- patch github.com
- web github.com