DEBIAN-CVE-2019-9511

Advisory lineage Upstream: 1 Downstream: 3
Upstream
CVE-2019-9511
Published: 13 Aug 2019, 21:15
Last modified:28 Apr 2026, 20:21

Vulnerability Summary

Overall Risk (default)
medium
30/100
CVSS Score
7.5 HIGH
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

13 Aug 2019, 21:15
Published
Vulnerability first disclosed
28 Apr 2026, 20:21
Last Modified
Vulnerability information updated

Description

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.

CVSS Metrics

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

Affected Systems

  • debian•nghttp2

    < 1.39.2-1 | < 1.39.2-1 | < 1.39.2-1 | < 1.39.2-1

  • debian•nginx

    < 1.14.2-3 | < 1.14.2-3 | < 1.14.2-3 | < 1.14.2-3

  • debian•nodejs

    < 10.16.3~dfsg-1 | < 10.16.3~dfsg-1 | < 10.16.3~dfsg-1 | < 10.16.3~dfsg-1

References (1)