CVE-2020-10109: HTTP Request Smuggling in Twisted

CVE-2020-10109 · Severity: low · CVSS 3.1 · Published 2020-03-12

In Twisted Web through 19.10.0, there was an HTTP request splitting vulnerability. When presented with a content-length and a chunked encoding header, the content-length took precedence and the remainder of the request body was interpreted as a pipelined request.

Technologies: twisted (PyPI). Vendors: PyPI.

Quick answers

Is CVE-2020-10109 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2020-10109 being exploited in the wild.
How severe is CVE-2020-10109?
Low severity, with a CVSS score of 3.1, published 12 March 2020.
Which products and versions are affected?
twisted (PyPI) ECOSYSTEM:introduced=0,fixed=20.3.0, ECOSYSTEM:introduced=0,fixed=20.3.0rc1.
Is there a fix for CVE-2020-10109?
Yes. twisted (PyPI): upgrade to 20.3.0, 20.3.0rc1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2020-10109?
Check whether you run twisted (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • twisted (PyPI): upgrade to 20.3.0, 20.3.0rc1 or later
    pip install "twisted>=20.3.0rc1"

Affected products

  • twisted (PyPI) ECOSYSTEM:introduced=0,fixed=20.3.0, ECOSYSTEM:introduced=0,fixed=20.3.0rc1

Identifiers

  • CVE-2020-10109
  • GHSA-p5xh-vx83-mxcj
  • PYSEC-2020-260

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