[KEV] OS Command Injection in Npm package systeminformation (CVE-2021-21315)
Summary
OS command injection in Npm package systeminformation (CVE-2021-21315). Successful exploitation can lead to full system takeover. Listed in CISA KEV — actively exploited. Mitigation: upgrade to 5.3.1 or later.
Original description
The description as published by the source.
The System Information Library for Node.JS (npm package "systeminformation") is an open source collection of functions to retrieve detailed hardware, system and OS information. In systeminformation before version 5.3.1 there is a command injection vulnerability. Problem was fixed in version 5.3.1. As a workaround instead of upgrading, be sure to check or sanitize service parameters that are passed to si.inetLatency(), si.inetChecksite(), si.services(), si.processLoad() ... do only allow strings, reject any arrays. String sanitation works as expected.
Source: CISA Known Exploited Vulnerabilities NVD GitHub Advisory CISA KEV
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-2021-21315 has been found in Npm package systeminformation.
Successful exploitation can lead to full system takeover.
Note: CISA has officially confirmed this is actively exploited in the wild. Treat it with elevated urgency.
What to do: upgrade Npm package systeminformation to 5.3.1 or later.
If unsure, ask your IT team or search "Npm package systeminformation CVE-2021-21315" on the vendor's site.
CVE-2021-21315 (Npm package systeminformation) — CWE-78
Attack vector: local / no user interaction
Patched: 5.3.1 — apply immediately
Listed in CISA KEV — actively exploited, treat as top priority.
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 Npm package systeminformation.
Check the vendor advisory for the affected versions of Npm package systeminformation.
Severity: High. Successful exploitation can lead to full system takeover. Listed in CISA KEV — actively exploited in the wild, treat as top priority.
Update to 5.3.1.
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 'systeminformation' . 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 'systeminformation' . | 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
systeminformationを grep し、稼働しているサービス・バージョンを把握する。 -
2Consider incident declaration escalate
Notify SOC / on-callCISA KEV登録済 = 実環境で悪用が観測されている。侵入の兆候があればインシデント対応宣言、無くてもパッチ適用までWAF強化を最優先で。
-
3Apply patch patch
Upgrade Npm package systeminformation to 5.3.1ステージング環境で 5.3.1 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。
-
4Post-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
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Debian DEBIAN-CVE-2021-21315 node-systeminformation
References
- advisory nvd.nist.gov
- advisory github.com
- advisory security.netapp.com
- package github.com
- patch github.com
- report lists.apache.org
- web lists.apache.org
- web security.netapp.com
- web cisa.gov
- web npmjs.com