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CVE-2020-27223

Vulnerability in org.eclipse.jetty:jetty-server (CVE-2020-27223)

Summary

Vulnerability in org.eclipse.jetty:jetty-server (CVE-2020-27223). Risk of unauthorized operations or information disclosure. Exploitable via Accept. Mitigation: upgrade to 11.0.1 or later.

Original description

The description as published by the source.

In Eclipse Jetty 9.4.6.v20170531 to 9.4.36.v20210114 (inclusive), 10.0.0, and 11.0.0 when Jetty handles a request containing multiple Accept headers with a large number of “quality” (i.e. q) parameters, the server may enter a denial of service (DoS) state due to high CPU usage processing those quality values, resulting in minutes of CPU time exhausted processing those quality values.

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-2020-27223 has been found in org.eclipse.jetty:jetty-server.
Attackers can target a specific entry point like Accept over the network to misuse the product.
Risk of unauthorized operations or information disclosure.
What to do: upgrade org.eclipse.jetty:jetty-server to 11.0.1 or later.
If unsure, ask your IT team or search "org.eclipse.jetty:jetty-server CVE-2020-27223" on the vendor's site.

CVE-2020-27223 (org.eclipse.jetty:jetty-server) — CWE-400
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Attack surface: Accept / QuotedQualityCSV / StatisticsServlet / DefaultServlet
Patched: 11.0.1 — 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.

❓ What is the problem

A vulnerability (CWE-400) exists in org.eclipse.jetty:jetty-server. Attackers reach the vulnerable code path via Accept without authentication.

📍 Affected scope

Check the vendor advisory for the affected versions of org.eclipse.jetty:jetty-server. Attack surface: Accept / QuotedQualityCSV / StatisticsServlet / DefaultServlet.

🔥 Severity

Severity: ?. Risk of unauthorized operations or information disclosure.

🔧 How to fix

Update to 11.0.1.

🛡️ 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 org.eclipse.jetty:jetty-server 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 org.eclipse.jetty:jetty-server to 11.0.1

    ステージング環境で 11.0.1 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。

  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

Maven org.eclipse.jetty:jetty-server
[{"type":"ECOSYSTEM","events":[{"introduced":"11.0.0"},{"fixed":"11.0.1"}]}]
Bitnami nifi
[{"type":"SEMVER","events":[{"introduced":"1.13.0"},{"last_affected":"1.13.0"}]}]
Bitnami solr
[{"type":"SEMVER","events":[{"introduced":"8.8.1"},{"fixed":"8.8.2"}]}]
Bitnami spark
[{"type":"SEMVER","events":[{"introduced":"3.1.1"},{"fixed":"3.1.2"}]}]

Fix status by distribution

Fixed packages published by each distribution for this CVE

References

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