A flaw was found in Undertow. For an AJP 400 response, EAP 7 is improperly sending two response packets, and those packets have the reuse flag set even though JBoss EAP closes the connection. A failure occurs when the connection is reused after a 400 by CPING since it reads in the second SEND_HEADERS response packet instead of a CPONG.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Red Hat Jboss Eap | — | Upgrade Red Hat JBoss EAP to the latest version | Sep 19, 2024 | Apr 11, 2022 |
| Red_hat Jboss_eap | — | — | Apr 10, 2023 | Aug 31, 2022 |
| Ubuntu | — | No solution exists | Jun 26, 2025 | Aug 31, 2022 |
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