CVE-2023-3223

Undertow: outofmemoryerror due to @multipartconfig handling

HIGH
7.5
CVSS Score
Published: September 27, 2023 at 01:54 PM UTC
Updated: June 17, 2026 at 06:13 AM UTC
12 products affected across 1 vendorOpenShift Container PlatformJBoss Enterprise Application PlatformSingle Sign on

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Severity
HIGH7.5
Exploit prediction
EPSS 3%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Vendor states this is fixed in 0:2.2.25-3.SP3_redhat_00001.1.el7eap (unaffected)
Vendor states this is fixed in 0:2.2.25-3.SP3_redhat_00001.1.el8eap (unaffected)
Vendor states this is fixed in 0:2.2.25-3.SP3_redhat_00001.1.el9eap (unaffected)
Vendor states this is fixed in 7.4 (unaffected)
redhat-enterprise-linux (environment)
redhat-enterprise-linux (environment)
redhat-enterprise-linux (environment)
Vendor states this is fixed in 0:18.0.9-1.redhat_00001.1.el7sso (unaffected)
Vendor states this is fixed in 0:18.0.9-1.redhat_00001.1.el8sso (unaffected)
Vendor states this is fixed in 0:18.0.9-1.redhat_00001.1.el9sso (unaffected)
Vendor states this is fixed in 7.6.5 (unaffected)
redhat-enterprise-linux (environment)
v < 2.2.24
Affected range stops below 2.2.24, so it looks safe — our inference, not a vendor statement

References (13)

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHredhat
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-789NVD-CWE-noinfo

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