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CVE-2024-3653: Undertow: learningpushhandler can lead to remote memory dos attacks

Description

A vulnerability was found in Undertow. This issue requires enabling the learning-push handler in the server's config, which is disabled by default, leaving the maxAge config in the handler unconfigured. The default is -1, which makes the handler vulnerable. If someone overwrites that config, the server is not subject to the attack. The attacker needs to be able to reach the server with a normal HTTP request.

Classification

CVE ID: CVE-2024-3653

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.04% (probability of being exploited)

EPSS Percentile: 15.25% (scored less or equal to compared to others)

EPSS Date: 2025-02-07 (when was this score calculated)

References

https://access.redhat.com/errata/RHSA-2024:4392
https://access.redhat.com/errata/RHSA-2024:5143
https://access.redhat.com/errata/RHSA-2024:5144
https://access.redhat.com/errata/RHSA-2024:5145
https://access.redhat.com/errata/RHSA-2024:5147
https://access.redhat.com/errata/RHSA-2024:6437
https://access.redhat.com/security/cve/CVE-2024-3653
https://bugzilla.redhat.com/show_bug.cgi?id=2274437

Timeline