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Uncontrolled Resource Consumption in httpd

CVE-2024-27316

  • httpd
High
7.5/10

Summary

The Apache HTTP Server implementation of the HTTP/2 protocol is vulnerable to the "CONTINUATION Flood". HTTP/2 incoming headers that exceed the limit are temporarily buffered in nghttp2 in order to generate an informative HTTP 413 response. If a client does not stop sending headers in a stream, using "CONTINUATION" frames, this leads to memory exhaustion and will cause a Denial of Service. This issue affects the package httpd versions 2.4.17 through 2.4.58, and 2.5.0-x versions.

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

CWE-400 - Uncontrolled resource consumption

An uncontrolled resource allocation attack (also known as resource exhaustion attack) triggers unauthorized overconsumption of the limited resources in an application, such as memory, file system storage, database connection pool entries, and CPU. This may lead to denial of service for valid users and degradation of the application's functionality as well as that of the host operating system.

References

Advisory Timeline

  • Published