OS Command Injection in connection-tester (CVE-2020-7781)
Summary
OS command injection in connection-tester (CVE-2020-7781). Successful exploitation can lead to full system takeover. Mitigation: upgrade to 0.2.1 or later.
Original description
The description as published by the source.
This affects the package connection-tester before 0.2.1. The injection point is located in line 15 in index.js. The following PoC demonstrates the vulnerability:
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-2020-7781 has been found in connection-tester.
Successful exploitation can lead to full system takeover.
What to do: upgrade connection-tester to 0.2.1 or later.
If unsure, ask your IT team or search "connection-tester CVE-2020-7781" on the vendor's site.
CVE-2020-7781 (connection-tester) — CWE-78
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Patched: 0.2.1 — 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.
OS command injection (CWE-78) exists in connection-tester.
Check the vendor advisory for the affected versions of connection-tester.
Severity: ?. Successful exploitation can lead to full system takeover.
Update to 0.2.1.
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 'connection-tester' . 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
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1Identify exposure identify
grep -r 'connection-tester' . | 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
connection-tester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 connection-tester to 0.2.1ステージング環境で 0.2.1 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。
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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 nvd.nist.gov
- patch github.com
- report snyk.io