MGASA-2019-0291

Advisory lineage Upstream: 2 Downstream: 0
Published: 28 Sept 2019, 01:05
Last modified:16 Apr 2026, 04:26

Vulnerability Summary

Overall Risk (default)
minimal
0/100
CVSS Score
No data
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

28 Sept 2019, 01:05
Published
Vulnerability first disclosed
16 Apr 2026, 04:26
Last Modified
Vulnerability information updated

Description

Updated nghttp2 packages fix security vulnerabilities The updated packages fix security vulnerabilities: 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. (CVE-2019-9511) Some HTTP/2 implementations are vulnerable to resource loops, potentially leading to a denial of service. The attacker creates multiple request streams and continually shuffles the priority of the streams in a way that causes substantial churn to the priority tree. This can consume excess CPU. (CVE-2019-9513)

Affected Systems

  • mageia•nghttp2

    < 1.9.2-1.1.mga6

  • mageia•nghttp2

    < 1.38.0-1.1.mga7

References (3)