GHSA-32gv-6cf3-wcmq HTTP/2 DoS Attacks: Ping, Reset, and Settings Floods

• PyPI twisted: < 19.10.0 → fixed in 19.10.0

Impact Twisted web servers that utilize the optional HTTP/2 support suffer from the following flow-control related vulnerabilities: Ping flood: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9512 Reset flood: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9514 Settings flood: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9515 A Twisted web server supports HTTP/2 requests if you've installed the `http2` optional dependency set. Workarounds There are no workarounds. References https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-002.md For more information If you have any questions or comments about this advisory: • Open an issue in Twisted's Trac