vulnerability
Ubuntu: (Multiple Advisories) (CVE-2019-9515): Twisted vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 8 | (AV:N/AC:L/Au:N/C:N/I:N/A:C) | Aug 13, 2019 | Mar 20, 2020 | Aug 18, 2025 |
Severity
8
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:C)
Published
Aug 13, 2019
Added
Mar 20, 2020
Modified
Aug 18, 2025
Description
Some HTTP/2 implementations are vulnerable to a settings flood, potentially leading to a denial of service. The attacker sends a stream of SETTINGS frames to the peer. Since the RFC requires that the peer reply with one acknowledgement per SETTINGS frame, an empty SETTINGS frame is almost equivalent in behavior to a ping. Depending on how efficiently this data is queued, this can consume excess CPU, memory, or both.
Solutions
ubuntu-pro-upgrade-libnetty-javaubuntu-pro-upgrade-python-twistedubuntu-pro-upgrade-python-twisted-binubuntu-pro-upgrade-python-twisted-webubuntu-pro-upgrade-python3-twistedubuntu-pro-upgrade-python3-twisted-bin
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