Skip to content
Noroxi
NVD / CVE Program· CNA redhat

CVE-2023-3223: Undertow: outofmemoryerror due to @multipartconfig handling

Noroxi assessment

Priority: Monitor (action score 31/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 2.6% (FIRST EPSS); higher than 85.6% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • Fixed version: undertow (Debian:14) 2.3.18-1; io.undertow:undertow-parent (Maven) 2.2.24.Final; eap7-activemq-artemis (Red Hat:jboss_enterprise_application_platform_eus:7.1::el7) 0:1.5.5.016-1.redhat_00001.1.ep7.el7.

Low priority for now. Upgrade to undertow (Debian:14) 2.3.18-1; io.undertow:undertow-parent (Maven) 2.2.24.Final; eap7-activemq-artemis (Red Hat:jboss_enterprise_application_platform_eus:7.1::el7) 0:1.5.5.016-1.redhat_00001.1.ep7.el7 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

A flaw was found in undertow. Servlets annotated with @MultipartConfig may cause an OutOfMemoryError due to large multipart content. This may allow unauthorized users to cause remote Denial of Service (DoS) attack. If the server uses fileSizeThreshold to limit the file size, it's possible to bypass the limit by setting the file name in the request to null.

HighCVSS 7.5 · v3.1—No exploit Fix available
Published
Sep 27, 2023
Updated
Jun 17, 2026
EPSS
2.6% · 85th percentile

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 2.6%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
7.5
CNA · redhat
7.5
agree

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2023-3223

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits instantly.

Your free account also gets you

Running WordPress? Scan your site free with WP Lens

  • Stack alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
All free tools

Sign up with email · Have an account? Sign in

Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every MondayDon't want an account? RSS feed for redhat records

Running WordPress? Scan your site free with WP Lens

Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

We use this product, ask for help

Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
redhatundertow
redhatopenshift container platform
redhatopenshift container platform for ibm linuxone
redhatopenshift container platform for power
redhatenterprise linux
redhatjboss enterprise application platform text-only advisories
redhatsingle sign-on
redhatjboss enterprise application platform

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • redhat jboss enterprise application platform7.4
  • redhat jboss enterprise application platform text-only advisoriesall versions
  • redhat openshift container platform4.11
  • redhat openshift container platform4.12
  • redhat openshift container platform for ibm linuxone4.10
  • redhat openshift container platform for ibm linuxone4.9
  • redhat openshift container platform for power4.10
  • redhat openshift container platform for power4.9
  • redhat single sign-onall versions
  • redhat single sign-on7.6
  • redhat undertowbefore 2.2.24

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

  • Red Hat Red Hat build of Quarkus

    • all versionsunknown

  • Red Hat Red Hat Data Grid 8

    • all versionsunknown

  • Red Hat Red Hat Decision Manager 7

    • all versionsaffected

  • Red Hat Red Hat Fuse 7.12.1

    • all versionsunknown

  • Red Hat Red Hat Integration Camel K

    • all versionsaffected

  • Red Hat Red Hat Integration Service Registry

    • all versionsaffected

  • Red Hat Red Hat JBoss Data Grid 7

    • all versionsunknown

  • Red Hat Red Hat JBoss Enterprise Application Platform 7.1.0

    • all versionsunknown

  • Red Hat Red Hat JBoss Enterprise Application Platform 7.4 for RHEL 8

    • 0:2.2.25-3.SP3_redhat_00001.1.el8eap and laternot affected · rpm

  • Red Hat Red Hat JBoss Enterprise Application Platform 7.4 for RHEL 9

    • 0:2.2.25-3.SP3_redhat_00001.1.el9eap and laternot affected · rpm

  • Red Hat Red Hat JBoss Enterprise Application Platform 7.4 on RHEL 7

    • 0:2.2.25-3.SP3_redhat_00001.1.el7eap and laternot affected · rpm

  • Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack

    • all versionsunknown

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:14undertowbefore 2.3.18-12.3.18-1
Mavenio.undertow:undertow-parentbefore 2.2.24.Final2.2.24.Final
Red Hat:jboss_enterprise_application_platform_eus:7.1::el7eap7-activemq-artemisbefore 0:1.5.5.016-1.redhat_00001.1.ep7.el70:1.5.5.016-1.redhat_00001.1.ep7.el7
Red Hat:jboss_enterprise_application_platform_eus:7.1::el7eap7-activemq-artemis-clibefore 0:1.5.5.016-1.redhat_00001.1.ep7.el70:1.5.5.016-1.redhat_00001.1.ep7.el7
Red Hat:jboss_enterprise_application_platform_eus:7.1::el7eap7-activemq-artemis-commonsbefore 0:1.5.5.016-1.redhat_00001.1.ep7.el70:1.5.5.016-1.redhat_00001.1.ep7.el7
Red Hat:jboss_enterprise_application_platform_eus:7.1::el7eap7-activemq-artemis-core-clientbefore 0:1.5.5.016-1.redhat_00001.1.ep7.el70:1.5.5.016-1.redhat_00001.1.ep7.el7
Red Hat:jboss_enterprise_application_platform_eus:7.1::el7eap7-activemq-artemis-dtobefore 0:1.5.5.016-1.redhat_00001.1.ep7.el70:1.5.5.016-1.redhat_00001.1.ep7.el7
Red Hat:jboss_enterprise_application_platform_eus:7.1::el7eap7-activemq-artemis-hornetq-protocolbefore 0:1.5.5.016-1.redhat_00001.1.ep7.el70:1.5.5.016-1.redhat_00001.1.ep7.el7
Red Hat:jboss_enterprise_application_platform_eus:7.1::el7eap7-activemq-artemis-hqclient-protocolbefore 0:1.5.5.016-1.redhat_00001.1.ep7.el70:1.5.5.016-1.redhat_00001.1.ep7.el7
Red Hat:jboss_enterprise_application_platform_eus:7.1::el7eap7-activemq-artemis-jdbc-storebefore 0:1.5.5.016-1.redhat_00001.1.ep7.el70:1.5.5.016-1.redhat_00001.1.ep7.el7
Red Hat:jboss_enterprise_application_platform_eus:7.1::el7eap7-activemq-artemis-jms-clientbefore 0:1.5.5.016-1.redhat_00001.1.ep7.el70:1.5.5.016-1.redhat_00001.1.ep7.el7
Red Hat:jboss_enterprise_application_platform_eus:7.1::el7eap7-activemq-artemis-jms-serverbefore 0:1.5.5.016-1.redhat_00001.1.ep7.el70:1.5.5.016-1.redhat_00001.1.ep7.el7
Red Hat:jboss_enterprise_application_platform_eus:7.1::el7eap7-activemq-artemis-journalbefore 0:1.5.5.016-1.redhat_00001.1.ep7.el70:1.5.5.016-1.redhat_00001.1.ep7.el7
Red Hat:jboss_enterprise_application_platform_eus:7.1::el7eap7-activemq-artemis-nativebefore 0:1.5.5.016-1.redhat_00001.1.ep7.el70:1.5.5.016-1.redhat_00001.1.ep7.el7
Red Hat:jboss_enterprise_application_platform_eus:7.1::el7eap7-activemq-artemis-rabefore 0:1.5.5.016-1.redhat_00001.1.ep7.el70:1.5.5.016-1.redhat_00001.1.ep7.el7
Red Hat:jboss_enterprise_application_platform_eus:7.1::el7eap7-activemq-artemis-selectorbefore 0:1.5.5.016-1.redhat_00001.1.ep7.el70:1.5.5.016-1.redhat_00001.1.ep7.el7
Red Hat:jboss_enterprise_application_platform_eus:7.1::el7eap7-activemq-artemis-serverbefore 0:1.5.5.016-1.redhat_00001.1.ep7.el70:1.5.5.016-1.redhat_00001.1.ep7.el7
Red Hat:jboss_enterprise_application_platform_eus:7.1::el7eap7-activemq-artemis-service-extensionsbefore 0:1.5.5.016-1.redhat_00001.1.ep7.el70:1.5.5.016-1.redhat_00001.1.ep7.el7
Red Hat:jboss_enterprise_application_platform_eus:7.1::el7eap7-artemis-nativebefore 1:1.5.5.016-1.redhat_00001.1.ep7.el71:1.5.5.016-1.redhat_00001.1.ep7.el7
Red Hat:jboss_enterprise_application_platform_eus:7.1::el7eap7-artemis-native-debuginfobefore 1:1.5.5.016-1.redhat_00001.1.ep7.el71:1.5.5.016-1.redhat_00001.1.ep7.el7
Red Hat:jboss_enterprise_application_platform_eus:7.1::el7eap7-artemis-native-wildflybefore 1:1.5.5.016-1.redhat_00001.1.ep7.el71:1.5.5.016-1.redhat_00001.1.ep7.el7
Red Hat:jboss_enterprise_application_platform_eus:7.1::el7eap7-jboss-xnio-basebefore 0:3.5.11-1.Final_redhat_00001.1.ep7.el70:3.5.11-1.Final_redhat_00001.1.ep7.el7
Red Hat:jboss_enterprise_application_platform_eus:7.1::el7eap7-jsoupbefore 0:1.14.2-1.redhat_00002.1.ep7.el70:1.14.2-1.redhat_00002.1.ep7.el7
Red Hat:jboss_enterprise_application_platform_eus:7.1::el7eap7-undertowbefore 0:1.4.18-14.SP13_redhat_00001.1.ep7.el70:1.4.18-14.SP13_redhat_00001.1.ep7.el7

+76

Same product

redhat: all records

Other highest-scoring records for the same primary product.

  • CVE-2020-1745A file inclusion vulnerability was found in the AJP connector enabled with a default AJP configuration port of 8009 in Undertow version 2.0.
    40Plan
  • CVE-2019-10212A flaw was found in, all under 2.0.20, in the Undertow DEBUG log for io.undertow.request.security.
    40Plan
  • CVE-2019-3888A vulnerability was found in Undertow web server before 2.0.21.
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2020-10687Sep 23, 2020 · A flaw was discovered in all versions of Undertow before Undertow 2.2.0.Final, where HTTP request smuggling related to CVE-2017-2666 is poss
    19Monitor
  • ← EarlierCVE-2021-20220Feb 23, 2021 · A flaw was found in Undertow.
    19Monitor
  • Later →CVE-2024-1459Feb 12, 2024 · Undertow: directory traversal vulnerability
    22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:undertow2.3.18-1 · Debian:14Package registry (OSV)
Maven:io.undertow:undertow-parent2.2.24.FinalPackage registry (OSV)
red hat:eap7-activemq-artemis0:1.5.5.016-1.redhat_00001.1.ep7.el7 · Red Hat:jboss_enterprise_application_platform_eus:7.1::el7Package registry (OSV)
red hat:eap7-activemq-artemis-cli0:1.5.5.016-1.redhat_00001.1.ep7.el7 · Red Hat:jboss_enterprise_application_platform_eus:7.1::el7Package registry (OSV)
red hat:eap7-jettison0:1.5.4-1.redhat_00002.1.el7eap · Red Hat:jboss_enterprise_application_platform:7.4::el7Package registry (OSV)
red hat:eap7-undertow0:2.2.25-3.SP3_redhat_00001.1.el7eap · Red Hat:jboss_enterprise_application_platform:7.4::el7Package registry (OSV)
red hat:eap7-wildfly0:7.4.12-3.GA_redhat_00003.1.el7eap · Red Hat:jboss_enterprise_application_platform:7.4::el7Package registry (OSV)
red hat:eap7-wildfly-java-jdk110:7.4.12-3.GA_redhat_00003.1.el7eap · Red Hat:jboss_enterprise_application_platform:7.4::el7Package registry (OSV)
red hat:eap7-wildfly-java-jdk170:7.4.12-3.GA_redhat_00003.1.el8eap · Red Hat:jboss_enterprise_application_platform:7.4::el8Package registry (OSV)
red hat:eap7-wildfly-java-jdk80:7.4.12-3.GA_redhat_00003.1.el7eap · Red Hat:jboss_enterprise_application_platform:7.4::el7Package registry (OSV)
red hat:eap7-wildfly-javadocs0:7.4.12-3.GA_redhat_00003.1.el7eap · Red Hat:jboss_enterprise_application_platform:7.4::el7Package registry (OSV)
red hat:eap7-wildfly-modules0:7.4.12-3.GA_redhat_00003.1.el7eap · Red Hat:jboss_enterprise_application_platform:7.4::el7Package registry (OSV)
red hat:rh-sso7-keycloak0:18.0.9-1.redhat_00001.1.el7sso · Red Hat:red_hat_single_sign_on:7.6::el7Package registry (OSV)
red hat:rh-sso7-keycloak-server0:18.0.9-1.redhat_00001.1.el7sso · Red Hat:red_hat_single_sign_on:7.6::el7Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-789 · Memory Allocation with Excessive Size Value

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (12 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records