In Twisted Web through 20.3.0, there was an HTTP request splitting vulnerability. When presented with two content-length headers, it ignored the first header. When the second content-length value was set to zero, the request body was interpreted as a pipelined request.
References
- https://nvd.nist.gov/vuln/detail/CVE-2020-10108
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6ISMZFZBWW4EV6ETJGXAYIXN3AT7GBPL/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YW3NIL7VXSGJND2Q4BSXM3CFTAFU6T7D/
- https://usn.ubuntu.com/4308-1/
- https://security.gentoo.org/glsa/202007-24
- https://usn.ubuntu.com/4308-2/
- https://www.oracle.com/security-alerts/cpuoct2020.html
- https://lists.debian.org/debian-lts-announce/2022/02/msg00021.html
- https://github.com/twisted/twisted/blob/6ff2c40e42416c83203422ff70dfc49d2681c8e2/NEWS.rst#twisted-2030-2020-03-13
- https://github.com/advisories/GHSA-h96w-mmrf-2h6v