CyberRota Analysis
AI-GeneratedThe urllib3 library for Python, versions 1.10.3 to 2.8.0, is vulnerable to unbounded memory allocation due to improper handling of chunked HTTP responses, which can lead to denial of service by exhausting the client process. This vulnerability is triggered when a malicious server sends an excessively long unterminated chunk-size line. Organizations using affected versions of urllib3 should prioritize upgrading to version 2.8.0 or later to mitigate this high-severity risk.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
urllib3 is an HTTP client library for Python. From 1.10.3 until 2.8.0, the HTTPResponse.read_chunked and HTTPResponse.stream methods can allocate unbounded memory because the streaming chunk parser buffers the chunk-size field until newline or EOF without a length bound. The trigger is that a malicious server returns Transfer-Encoding: chunked followed by a very long run of bytes without a newline. The attack mechanism is that a malicious HTTP server sends a very long unterminated chunk-size line. The impact is that unbounded memory allocation can exhaust the client process. This issue is fixed in version 2.8.0.