Some HTTP/2 implementations are vulnerable to window size...
High severity
Unreviewed
Published
May 24, 2022
to the GitHub Advisory Database
•
Updated Jan 14, 2025
Description
Published by the National Vulnerability Database
Aug 13, 2019
Published to the GitHub Advisory Database
May 24, 2022
Last updated
Jan 14, 2025
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.
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