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Allocation of Resources Without Limits or Throttling

CVE-2023-5379

High
7.5/10

Summary

A flaw was found in Undertow. When an AJP request is sent that exceeds the "max-header-size" attribute in "ajp-listener", JBoss EAP is marked in an error state by "mod_cluster" in httpd, causing JBoss EAP to close the TCP connection without returning an AJP response. This happens because "mod_proxy_cluster" marks the JBoss EAP instance as an error worker when the TCP connection is closed from the backend after sending the AJP request without receiving an AJP response, and stops forwarding. This issue could allow a malicious user could to repeatedly send requests that exceed the "max-header-size", causing a Denial of Service (DoS). This issue affects versions prior to 2.3.12.Final.

  • LOW
  • NETWORK
  • NONE
  • UNCHANGED
  • NONE
  • NONE
  • NONE
  • HIGH

CWE-770 - Allocation of Resources Without Limits or Throttling

The software allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.

References

Advisory Timeline

  • Published