Categories
CVE-2020-36193 CISA KEV high

[KEV] Path Traversal in PEAR Archive_Tar (CVE-2020-36193)

Summary

Path traversal in PEAR Archive_Tar (CVE-2020-36193). Risk of unauthorized operations or information disclosure. Listed in CISA KEV — actively exploited.

Original description

The description as published by the source.

Tar.php in Archive_Tar through 1.4.11 allows write operations with Directory Traversal due to inadequate checking of symbolic links, a related issue to CVE-2020-28948.

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-2020-36193 has been found in PEAR Archive_Tar.
Risk of unauthorized operations or information disclosure.
Note: CISA has officially confirmed this is actively exploited in the wild. Treat it with elevated urgency.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "PEAR Archive_Tar CVE-2020-36193" on the vendor's site.

CVE-2020-36193 (PEAR Archive_Tar) — CWE-22
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.

❓ What is the problem

Path traversal (CWE-22) exists in PEAR Archive_Tar.

📍 Affected scope

Check the vendor advisory for the affected versions of PEAR Archive_Tar.

🔥 Severity

Severity: High. Risk of unauthorized operations or information disclosure. Listed in CISA KEV — actively exploited in the wild, treat as top priority.

🔧 How to fix

Update to the patched release per vendor advisory.

🛡️ 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. Run grep -r 'Archive_Tar' . 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

  1. 1
    Identify exposure identify
    grep -r 'Archive_Tar' . | 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 Archive_Tar を grep し、稼働しているサービス・バージョンを把握する。

  2. 2
    Consider incident declaration escalate
    Notify SOC / on-call

    CISA 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。

  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 drupal
[{"type":"SEMVER","events":[{"introduced":"7.0.0"},{"fixed":"7.78.0"},{"introduced":"8.9.0"},{"fixed":"8.9.13"},{"introduced":"9.0.0"},{"fixed":"9.0.11"},{"introduced":"9.1.0"},{"fixed":"9.1.3"}]}]

Fix status by distribution

Fixed packages published by each distribution for this CVE

References

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