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CVE-2023-1973

25
FAUCET Score

CVE-2023-1973 describes a Denial of Service (DoS) vulnerability within the Undertow package, specifically when utilizing the FormAuthenticationMechanism. A remote, unauthenticated attacker can exploit this flaw by sending specially crafted requests, leading to an OutOfMemory error and exhausting the server's resources. This vulnerability carries a CVSS score of 7.5 (HIGH), indicating a high impact on availability with low attack complexity and no user interaction required. Currently, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
Red HatRed Hat JBoss Enterprise Application Platform 7.4 On RHEL 7
Range not provided by sourceCNA affecteddefault affected
Red HatRed Hat JBoss Enterprise Application Platform 7.4 For RHEL 8
Range not provided by sourceCNA affecteddefault affected
Red HatRed Hat JBoss Enterprise Application Platform 7.4 For RHEL 9
Range not provided by sourceCNA affecteddefault affected
Red HatRed Hat JBoss Enterprise Application Platform 8.0 For RHEL 8
Range not provided by sourceCNA affecteddefault affected
Red HatRed Hat JBoss Enterprise Application Platform 8.0 For RHEL 9
Range not provided by sourceCNA affecteddefault affected

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.29%
Probability of exploitation in next 30 days
EPSS Percentile
67.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0129 is in the 47th percentile among its peer group of 51,553 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (28)

mavenpatch availablevia ghsa
Product: io.undertow:undertow-coreFixed in: 2.2.32.Final
mavenpatch availablevia ghsa
Product: io.undertow:undertow-coreFixed in: 2.3.13.Final
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Enterprise Application PlatformFixed in: io.undertow/undertow-core:2.2.30.SP1-redhat-00001
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7Fixed in: eap7-activemq-artemis-0:1.5.5.016-1.redhat_00001.1.ep7.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7Fixed in: eap7-artemis-native-1:1.5.5.016-1.redhat_00001.1.ep7.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7Fixed in: eap7-jboss-xnio-base-0:3.5.11-1.Final_redhat_00001.1.ep7.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7Fixed in: eap7-jsoup-0:1.14.2-1.redhat_00002.1.ep7.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7Fixed in: eap7-undertow-0:1.4.18-14.SP13_redhat_00001.1.ep7.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7Fixed in: eap7-wildfly-0:7.1.10-2.GA_redhat_00002.1.ep7.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7Fixed in: eap7-woodstox-core-0:5.0.3-2.redhat_00002.1.ep7.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7Fixed in: eap7-xml-security-0:2.0.10-2.redhat_00002.1.ep7.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7Fixed in: eap7-jackson-annotations-0:2.10.4-3.redhat_00006.1.el7eap
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7Fixed in: eap7-jackson-core-0:2.10.4-3.redhat_00006.1.el7eap
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7Fixed in: eap7-jackson-databind-0:2.10.4-5.redhat_00006.1.el7eap
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7Fixed in: eap7-jackson-jaxrs-providers-0:2.10.4-3.redhat_00006.1.el7eap
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7Fixed in: eap7-jackson-modules-base-0:2.10.4-5.redhat_00006.1.el7eap
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7Fixed in: eap7-jackson-modules-java8-0:2.10.4-2.redhat_00006.1.el7eap
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7Fixed in: eap7-jboss-server-migration-0:1.7.2-16.Final_redhat_00017.1.el7eap
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7Fixed in: eap7-netty-0:4.1.63-5.Final_redhat_00003.1.el7eap
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7Fixed in: eap7-undertow-0:2.0.41-4.SP5_redhat_00001.1.el7eap
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7Fixed in: eap7-wildfly-0:7.3.14-3.GA_redhat_00002.1.el7eap
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7Fixed in: eap7-wildfly-elytron-0:1.10.17-1.Final_redhat_00001.1.el7eap
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Enterprise Application Platform 7.4 for RHEL 8Fixed in: eap7-undertow-0:2.2.30-1.SP1_redhat_00001.1.el8eap
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Enterprise Application Platform 7.4 for RHEL 9Fixed in: eap7-undertow-0:2.2.30-1.SP1_redhat_00001.1.el9eap
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Enterprise Application Platform 7.4 on RHEL 7Fixed in: eap7-undertow-0:2.2.30-1.SP1_redhat_00001.1.el7eap
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Enterprise Application Platform 8Fixed in: undertow-core
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8Fixed in: eap8-undertow-0:2.3.11-1.SP1_redhat_00001.1.el8eap
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 9Fixed in: eap8-undertow-0:2.3.11-1.SP1_redhat_00001.1.el9eap
View patch

Vendor Advisories (2)

mavenGHSA-97cq-f4jm-mv8hmedium

Undertow Denial of Service vulnerability

Nov 7, 2024
redhatCVE-2023-1973Important

undertow: unrestricted request storage leads to memory exhaustion

Apr 4, 2024

References

access.redhat.com / errata/RHSA-2024:1674
access.redhat.com / errata/RHSA-2024:1675
access.redhat.com / errata/RHSA-2024:1676
access.redhat.com / errata/RHSA-2024:1677
access.redhat.com / errata/RHSA-2024:2763
access.redhat.com / errata/RHSA-2024:2764
access.redhat.com / security/cve/CVE-2023-1973
bugzilla.redhat.com / show_bug.cgi