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ALPINE-CVE-2019-9511

ALPINE-CVE-2019-9511 PUBLISHED CVSS 7.5 HIGH

Some HTTP/2 implementations are vulnerable to window size manipulation and stream prioritization manipulation, potentially leading to a denial of service. The attacker requests a large amount of data from a specified resource over multiple streams. They manipulate window size and stream priority to force the server to queue the data in 1-byte chunks. Depending on how efficiently this data is queued, this can consume excess CPU, memory, or both.

Risk Scores

CVSS v3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Products

VendorProductVersions
Alpine:v3.19nghttp21.31.0-r0, 1.31.0-r1, 1.31.1-r0
Alpine:v3.19nodejs10.16.2-r0, 8.11.1-r1, 8.11.1-r0
Alpine:v3.10nghttp21.22.0-r0, 1.21.0-r0, 1.20.0-r0
Alpine:v3.23nginx1.10.1-r6, 1.12.0-r1, 1.12.0-r2
Alpine:v3.17nodejs10.14.0-r0, 10.14.1-r0, 10.14.2-r0
Alpine:v3.14nghttp21.9.2-r0, 1.9.2-r0, 1.9.1-r0
Alpine:v3.13nginx1.0.11-r1, 1.10.3-r3, 0
Alpine:v3.22nghttp21.37.0-r1, 1.36.0-r0, 1.35.1-r0
Alpine:v3.18nodejs8.10.0-r0, 8.9.4-r0, 8.9.3-r1
Alpine:v3.14nginx1.12.1-r1, 1.12.1-r0, 1.12.0-r2
Alpine:v3.18nginx1.2.2-r0, 1.2.5-r0, 1.2.6-r0
Alpine:v3.22nodejs0, 0, 0
Alpine:v3.16nginx1.16.0-r2, 1.16.0-r1, 1.16.0-r0
Alpine:v3.13nodejs8.9.3-r1, 6.10.3-r0, 6.10.0-r0
Alpine:v3.21nodejs0, 0, 0
Alpine:v3.12nodejs8.11.4-r0, 8.10.0-r0, 6.9.5-r1
Alpine:v3.8nginx1.10.3-r1, 1.9.14-r1, 1.9.14-r0
Alpine:v3.11nghttp21.12.0-r0, 1.13.0-r0, 1.11.1-r0
Alpine:v3.21nghttp21.31.1-r0, 1.9.2-r0, 1.9.1-r0
Alpine:v3.15nghttp21.31.0-r1, 1.33.0-r1, 1.34.0-r0

…and 28 more

Timeline

  • Aug 13, 2019 CVE Published
  • Dec 3, 2025 CVE Updated
  • Apr 30, 2026 Distribution Patch
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