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CVE-2018-11307 critical CVSS 9.8

Unsafe Deserialization in FasterXML jackson-databind (CVE-2018-11307)

Summary

Vulnerability in FasterXML jackson-databind (CVE-2018-11307). Successful exploitation can lead to full system takeover. Mitigation: upgrade to 2.7.9.4 or later.

Original description

The description as published by the source.

An issue was discovered in FasterXML jackson-databind 2.0.0 through 2.9.5. Use of Jackson default typing along with a gadget class from iBatis allows exfiltration of content. Fixed in 2.7.9.4, 2.8.11.2, and 2.9.6.

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-2018-11307 has been found in FasterXML jackson-databind.
Successful exploitation can lead to full system takeover. CVSS score: 9.8/10.
What to do: upgrade FasterXML jackson-databind to 2.7.9.4 or later.
If unsure, ask your IT team or search "FasterXML jackson-databind CVE-2018-11307" on the vendor's site.

CVE-2018-11307 (FasterXML jackson-databind) — CWE-502 / CVSS v3 9.8
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Patched: 2.7.9.4 — 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.

❓ What is the problem

Unsafe deserialization (CWE-502) exists in FasterXML jackson-databind.

📍 Affected scope

Check the vendor advisory for the affected versions of FasterXML jackson-databind.

🔥 Severity

Severity: Critical (CVSS 9.8/10). Successful exploitation can lead to full system takeover.

🔧 How to fix

Update to 2.7.9.4.

🛡️ 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. Audit SBOM/dependencies to find affected services.

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

  1. 1
    Identify exposure identify 
    Audit SBOM/dependencies for affected components.

    資産台帳・SBOM・依存マニフェストで FasterXML jackson-databind を使っているサービスとバージョンを洗い出す。

  2. 2
    Apply patch patch 
    Upgrade FasterXML jackson-databind to 2.7.9.4

    ステージング環境で 2.7.9.4 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。

  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。

Fix status by distribution

Fixed packages published by each distribution for this CVE

References

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