The Eclipse Foundation Eclipse Jetty: Sensitive Information in Resource Not Removed Before Reuse (CVE-2020-27218)
Published Sources: Red Hat, BSI, CVE.org, OSV
What is affected, what to do
In Eclipse Jetty version 9.4.0.RC0 to 9.4.34.v20201102, 10.0.0.alpha0 to 10.0.0.beta2, and 11.0.0.alpha0 to 11.0.0.beta2, if GZIP request body inflation is enabled and requests from different clients are multiplexed onto a single connection, and if an attacker can send a request with a body that is received entirely but not consumed by the application, then a subsequent request on the same connection will see that body prepended to its body. The attacker will not see any data but may inject data into the body of the subsequent request.
Update jetty to version 9.4.35, blockchain_platform to version 21.1.2, rest_data_services to version 20.4.3.050.1904.
- Affected
- The Eclipse Foundation Eclipse Jetty
eq 9.4.0.RC0 to 9.4.34.v20201102..9.4.0.RC0 to 9.4.34.v20201102 - The Eclipse Foundation Eclipse Jetty
eq 10.0.0.alpha0 to 10.0.0.beta2..10.0.0.alpha0 to 10.0.0.beta2 - The Eclipse Foundation Eclipse Jetty
eq 11.0.0.alpha0 to 11.0.0.beta2..11.0.0.alpha0 to 11.0.0.beta2
- The Eclipse Foundation Eclipse Jetty
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Metrics
4.8
Priority
XIEM Effective CVSS: highest available CVSS rating from NVD and vendor data.
Source: NVD, CVSS v3
4.8
CVSS v3
Severity Medium on the scale from 0 to 10.
Source: Red Hat, BSI, CVE.org, OSV
8.3 %
EPSS score
Moderate — model estimates 1-10% exploitation likelihood.
Source: FIRST EPSS, percentile 94.9
Show all metrics
- Severity
- Medium
Priority (0–325)
The priority score is a consolidated metric that condenses several individual signals into a single, action-guiding ranking: technical severity (CVSS), exploitation likelihood (EPSS), known-exploited status (KEV) and the context of the affected asset. The aim is to answer the only truly important question in vulnerability management: what first?
Read in glossary- 96.03 Methodology
Exploit maturity
An exploit is code or a technique that specifically uses a concrete vulnerability to force unintended behaviour — such as executing code or escalating privileges. It is the tool that turns a theoretical flaw into a practical attack.
Read in glossary- no public PoC known
XIEM Effective CVSS
XIEM® is the tiered managed-security operating model from NEOSEC and a registered trademark of NEOSEC GmbH. It extends classic SIEM — the central collection, normalisation and correlation of security-relevant events — with endpoint forensics, network visibility and deception technology, and consolidates them into three building tiers: Sentry, Orchestrate and Command.
Read in glossary- 4.8 Methodology
CVSS v3
CVSS is the globally established, open standard for assessing the technical severity of a vulnerability on a scale from 0 to 10. It describes how easily a flaw can be exploited and what damage it can cause — but not how likely its actual exploitation is. CVSS and the complementary EPSS deliberately answer different questions.
Read in glossary- 4.8
EPSS score
The EPSS score is the absolute model output for an individual vulnerability: the estimated probability of real-world exploitation within the next 30 days, expressed as a value between 0 and 1 (i.e. 0 % to 100 %). A score of 0.42 means „the model estimates a 42 % chance of real-world exploitation within 30 days“.
Read in glossary- 8.3 %
- Moderate — model estimates 1-10% exploitation likelihood.
EPSS percentile
The EPSS percentile is the relative position of a vulnerability within all EPSS-scored CVEs, expressed as a value between 0 and 1. A percentile of 0.90 means „this CVE has a higher EPSS score than 90 % of all other scored CVEs“. Unlike the EPSS score, it is not a probability — but a positioning within a ranking.
Read in glossary- 94.9
- Critical — this CVE ranks in the top fifth of all CVEs scored today (rank ≥ 80%).
KEV status
The KEV catalogue is a list maintained by the US authority CISA of vulnerabilities for which active exploitation in the wild has been confirmed. It answers not the question „how severe?“ but „is it already being attacked?“ — thereby sharply prioritising patching.
Read in glossary- —
- Published
CWE
CWE is a catalogue of typical weakness types in software and hardware — such as flawed input validation, unsafe memory handling or poor authentication. Where a CVE names a concrete vulnerability in a concrete product, a CWE describes the underlying class of defect.
Read in glossary- CWE-226
Detection rules
No NEOSEC detection rule is available for this vulnerability yet.
Classification under NIS2 and CRA
Rule-based classification from exploitation status and severity. It does not replace a case-by-case assessment.
NIS2
NIS2 is EU Directive (EU) 2022/2555 to raise the level of cybersecurity across the Union. It substantially broadens obligations compared with the first NIS directive: more sectors, mandatory risk management, staged reporting duties and personal accountability of senior management.
Read in glossary- Handle the vulnerability in regular vulnerability handling under Art. 21(2)(e) NIS2.
CRA
The CRA is EU Regulation (EU) 2024/2847 setting horizontal cybersecurity requirements for „products with digital elements“ — from industrial controllers and software to connected consumer devices. For the first time manufacturers must ensure security across the entire product lifecycle, handle vulnerabilities and provide security updates.
Read in glossary- From 11.12.2027, Annex I Part II CRA requires manufacturers of affected products with digital elements to handle vulnerabilities without delay and provide security updates.
ISO/IEC 27001
ISO/IEC 27001 is the internationally leading standard for an information security management system (ISMS). It describes a risk-based, process-oriented framework to systematically plan, implement, review and improve information security.
Read in glossary- Control A.8.8, management of technical vulnerabilities: assess relevance to your systems, plan remediation and keep evidence.
Description
In Eclipse Jetty version 9.4.0.RC0 to 9.4.34.v20201102, 10.0.0.alpha0 to 10.0.0.beta2, and 11.0.0.alpha0 to 11.0.0.beta2, if GZIP request body inflation is enabled and requests from different clients are multiplexed onto a single connection, and if an attacker can send a request with a body that is received entirely but not consumed by the application, then a subsequent request on the same connection will see that body prepended to its body. The attacker will not see any data but may inject data into the body of the subsequent request.
Source: redhat_csaf, BSI CSAF, BSI WID Portal, NVD (NIST), OSV (Open Source Vulnerabilities), cvelistv5
Affected products
The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.
| Affected versions | Fixed in | ||
|---|---|---|---|
| The Eclipse Foundation | Eclipse Jetty |
|
|
| apache | kafka |
|
|
| apache | spark |
|
|
| eclipse | jetty |
|
|
| netapp | oncommand_system_manager |
|
|
| netapp | snap_creator_framework |
|
|
| oracle | blockchain_platform |
|
|
| oracle | communications_converged_application_server_-_service_controller |
|
|
| oracle | communications_offline_mediation_controller |
|
|
| oracle | communications_pricing_design_center |
|
|
| oracle | communications_services_gatekeeper |
|
|
| oracle | communications_session_route_manager |
|
|
| oracle | flexcube_private_banking |
|
|
| oracle | hyperion_infrastructure_technology |
|
|
| oracle | rest_data_services |
|
|
| oracle | retail_eftlink |
|
|
| oracle | siebel_core_-_automation |
|
|
| Dell | ECS |
|
|
| maven | org.eclipse.jetty:jetty-server |
|
|
Vendors and products
- Apache Software Foundation Apache Kafka
- Apache Software Foundation Apache Spark
- Debian Debian Linux
- Dell Dell ECS
- Eclipse Foundation Eclipse Jetty
- NetApp OnCommand System Manager 9.x
- NetApp NetApp Snap Creator Framework
- Oracle Blockchain Platform
- Oracle Communications Converged Application Server - Service Controller
- Oracle Communications Offline Mediation Controller
- Oracle Oracle Communications Pricing Design Center
- Oracle Oracle Communications Services Gatekeeper
Affected operating systems
| Linux | debian | debian_linux | 10.0 |
Weakness classes (CWE)
CWE-226Sensitive Information in Resource Not Removed Before Reuse
Base
The product releases a resource such as memory or a file so that it can be made available for reuse, but it does not clear or "zeroize" the information contained in the resource before the product performs a critical state transition or makes the resource available for reuse by other entities.
Entry at MITRE CWE-226
References & sources
- github.comeclipse/jetty.project/security/advisories/GHSA-86wm-rrjm-8wh8web, Third-party advisory
- NVD (NIST)vuln/detail/CVE-2020-27218advisory
- lists.apache.orgthread.html/rbbd003149f929b0e2fe58fb315de1658e98377225632e7e423…web
- lists.apache.org[kafka-commits] 20210222 [kafka] branch 2.7 updated: KAFKA-12324: Upgrade jetty to fix CVE-2020-27218web, Mailing list, Issue tracking
- lists.apache.orgthread.html/rba4bca48d2cdfa8c08afc368a9cc4572ec85a5915ba29b8a19…web
- lists.apache.org[spark-reviews] 20210216 [GitHub] [spark] AmplabJenkins commented on pull request #31574: [SPARK-34449][BUILD] Upgrade Jetty to fix CVE-2020-27218web, Mailing list, Issue tracking
- lists.apache.orgthread.html/rb8f413dc923070919b09db3ac87d079a2dcc6f0adfbb029e20…web
- lists.apache.org[zookeeper-notifications] 20201207 [GitHub] [zookeeper] nkalmar commented on pull request #1552: ZOOKEEPER-4023: dependency-check:check failing - Jetty 9.4.34.v20201102 - CVE-2020-27218web, Mailing list, Issue tracking
- lists.apache.orgthread.html/rb6a3866c02ac4446451c7d9dceab2373b6d32fb058f9085c61…web
- lists.apache.org[spark-reviews] 20210219 [GitHub] [spark] AmplabJenkins commented on pull request #31583: [SPARK-34449][BUILD][2.4] Upgrade Jetty to fix CVE-2020-27218web, Mailing list, Issue tracking
- lists.apache.orgthread.html/rb4ca79d1af5237108ce8770b7c46ca78095f62ef21331d9d06…web
- lists.apache.org[kafka-jira] 20210222 [GitHub] [kafka] dongjinleekr opened a new pull request #10177: KAFKA-12324: Upgrade jetty to fix CVE-2020-27218web, Mailing list, Issue tracking
- lists.apache.orgthread.html/racf9e6ad2482cb9b1e3e1b2c1b443d9d5cf14055fb54dec3d2…web
- lists.apache.org[spark-reviews] 20210217 [GitHub] [spark] AmplabJenkins removed a comment on pull request #31574: [SPARK-34449][BUILD] Upgrade Jetty to fix CVE-2020-27218web, Mailing list, Issue tracking
- lists.apache.orgthread.html/racd55c9b704aa68cfb4436f17739b612b5d4f887155e04ed52…web
- lists.apache.org[kafka-dev] 20210211 [jira] [Created] (KAFKA-12324) Upgrade jetty to fix CVE-2020-27218web, Mailing list, Issue tracking
- bugs.eclipse.orgbugs/show_bug.cgi?id=568892web, Issue tracking, Vendor advisory
- lists.apache.org[zookeeper-issues] 20201205 [jira] [Updated] (ZOOKEEPER-4023) dependency-check:check failing - Jetty 9.4.34.v20201102 - CVE-2020-27218web, Mailing list, Issue tracking
- lists.apache.orgthread.html/rbc5a8d7a0a13bc8152d427a7e9097cdeb139c6cfe111b2f00f…web
- lists.apache.org[spark-issues] 20210216 [jira] [Created] (SPARK-34449) Upgrade Jetty to fix CVE-2020-27218web, Mailing list, Issue tracking
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<a href="https://intel.neosec.eu/en/cve/CVE-2020-27218"><img src="https://intel.neosec.eu/badge/cve/CVE-2020-27218.svg?lang=en" alt="CVE-2020-27218 – NEOSEC Intel" height="20"></a>