CVE-2019-9515
7.5
HIGH
CVSS 3.1
EPSS 8.9%
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.
How to fix CVE-2019-9515
To remediate CVE-2019-9515, upgrade the affected package to a fixed version below.
- —upgrade to 10.16.3-r0 or later
- —upgrade to 2.2.5+dfsg2-3 or later
- —upgrade to 8.0.5+ds-1 or later
Is CVE-2019-9515 being exploited?
Moderate — EPSS is 8.9%. Track this CVE but it's not at the top of the prioritisation list.
Affected packages (3)
- from 0, < 10.16.3-r0
- from 0, < 2.2.5+dfsg2-3
- from 0, < 8.0.5+ds-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |