OS Command Injection in gerapy (CVE-2021-43857)
Summary
OS command injection in gerapy (CVE-2021-43857). Successful exploitation can lead to full system takeover. Mitigation: upgrade to 0.9.8 or later.
Original description
The description as published by the source.
Gerapy is a distributed crawler management framework. Gerapy prior to version 0.9.8 is vulnerable to remote code execution, and this issue is patched in version 0.9.8.
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-2021-43857 has been found in gerapy.
Successful exploitation can lead to full system takeover.
What to do: upgrade gerapy to 0.9.8 or later.
If unsure, ask your IT team or search "gerapy CVE-2021-43857" on the vendor's site.
CVE-2021-43857 (gerapy) — CWE-78
Attack vector: remote (network-reachable) / no user interaction
Patched: 0.9.8 — 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 gerapy.
Check the vendor advisory for the affected versions of gerapy.
Severity: ?. Successful exploitation can lead to full system takeover.
Update to 0.9.8.
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 'gerapy' . 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 'gerapy' . | 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
gerapy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 gerapy to 0.9.8ステージング環境で 0.9.8 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
- report github.com
- report packetstormsecurity.com
- web github.com
- web github.com