CVE-2023-1973Network attack vector

Service interruption via long-lived authentication sessions

Published Nov 7, 2024 · Updated Nov 7, 2024

Denial of service in Undertow on Red Hat JBoss EAP 7.4 and 8.0 allows remote attackers to exhaust server memory with crafted requests. During form authentication, storeInitialLocation creates a session for an initial request and retains saved request state for the configured session lifetime. Unauthenticated access to a form-protected endpoint is sufficient; repeated requests can terminate the Java process with an OutOfMemoryError and interrupt hosted applications.

CVSS severity7.5
High
EPSS probability1.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Denial of service in Undertow on Red Hat JBoss EAP 7.4 and 8.0 allows remote attackers to exhaust server memory with crafted requests. During form authentication, storeInitialLocation creates a session for an initial request and retains saved request state for the configured session lifetime. Unauthenticated access to a form-protected endpoint is sufficient; repeated requests can terminate the Java process with an OutOfMemoryError and interrupt hosted applications.

The record

CVE
CVE-2023-1973
Published
Nov 7, 2024
Updated
Nov 7, 2024
Vendor
389 Directory Server
Product
Red Hat JBoss Enterprise Application Platform 8
Classifications
CWE-20, T1499.003
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 7, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 7, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

389 Directory Server · Red Hat JBoss Enterprise Application Platform 8Affected versions are unavailable in this record.
389 Directory Server · Red Hat JBoss Enterprise Application Platform 7Affected versions are unavailable in this record.

Published CVSS scores

7.5Red Hat, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
T1499.003Application Exhaustion Flood

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo