GHSA-32gv-6cf3-wcmq

HTTP/2 DoS Attacks: Ping, Reset, and Settings Floods

Published 14 Mar 2022Modified 14 Mar 2022

In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

No source gives a CVSS score.

Trivy's own label is CRITICAL. Rated critical by GHSA.

Description

### 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](https://twistedmatrix.com/documents/19.2.0/installation/howto/optional.html). ### 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](https://twistedmatrix.com/trac/)

Affected packages and fixed versions

Source	Package	Fixed in
pip::GitHub Security Advisory pip	twisted	19.10.0

References

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