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CVE-2020-10109: HTTP Request Smuggling in Twisted

March 31, 2020 (updated November 25, 2024)

In Twisted Web through 20.3.0, 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.

References

  • github.com/advisories/GHSA-p5xh-vx83-mxcj
  • github.com/pypa/advisory-database/tree/main/vulns/twisted/PYSEC-2020-260.yaml
  • github.com/twisted/twisted
  • github.com/twisted/twisted/blob/6ff2c40e42416c83203422ff70dfc49d2681c8e2/NEWS.rst
  • github.com/twisted/twisted/commit/4a7d22e490bb8ff836892cc99a1f54b85ccb0281
  • know.bishopfox.com/advisories
  • know.bishopfox.com/advisories/twisted-version-19.10.0
  • lists.debian.org/debian-lts-announce/2022/02/msg00021.html
  • lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6ISMZFZBWW4EV6ETJGXAYIXN3AT7GBPL
  • lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YW3NIL7VXSGJND2Q4BSXM3CFTAFU6T7D
  • lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6ISMZFZBWW4EV6ETJGXAYIXN3AT7GBPL
  • lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YW3NIL7VXSGJND2Q4BSXM3CFTAFU6T7D
  • nvd.nist.gov/vuln/detail/CVE-2020-10109
  • security.gentoo.org/glsa/202007-24
  • usn.ubuntu.com/4308-1
  • usn.ubuntu.com/4308-2

Code Behaviors & Features

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Affected versions

All versions before 20.3.0

Fixed versions

  • 20.3.0

Solution

Upgrade to version 20.3.0 or above.

Impact 9.8 CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Learn more about CVSS

Weakness

  • CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

Source file

pypi/Twisted/CVE-2020-10109.yml

Spotted a mistake? Edit the file on GitLab.

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