Improper Handling of Highly Compressed Data (Data Amplification) Affecting resource-agents package, versions <0:4.9.0-54.el8_10.27


Severity

Recommended
0.0
high
0
10

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.01% (3rd percentile)

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  • Snyk IDSNYK-ORACLE8-RESOURCEAGENTS-15133634
  • published29 Jan 2026
  • disclosed5 Dec 2025

Introduced: 5 Dec 2025

CVE-2025-66471  (opens in a new tab)
CWE-409  (opens in a new tab)

How to fix?

Upgrade Oracle:8 resource-agents to version 0:4.9.0-54.el8_10.27 or higher.
This issue was patched in ELSA-2026-1241.

NVD Description

Note: Versions mentioned in the description apply only to the upstream resource-agents package and not the resource-agents package as distributed by Oracle. See How to fix? for Oracle:8 relevant fixed versions and status.

urllib3 is a user-friendly HTTP client library for Python. Starting in version 1.0 and prior to 2.6.0, the Streaming API improperly handles highly compressed data. urllib3's streaming API is designed for the efficient handling of large HTTP responses by reading the content in chunks, rather than loading the entire response body into memory at once. When streaming a compressed response, urllib3 can perform decoding or decompression based on the HTTP Content-Encoding header (e.g., gzip, deflate, br, or zstd). The library must read compressed data from the network and decompress it until the requested chunk size is met. Any resulting decompressed data that exceeds the requested amount is held in an internal buffer for the next read operation. The decompression logic could cause urllib3 to fully decode a small amount of highly compressed data in a single operation. This can result in excessive resource consumption (high CPU usage and massive memory allocation for the decompressed data.

CVSS Base Scores

version 3.1