ALAS2-2019-1298 --- nghttp2, libnghttp2ID: oval:org.secpod.oval:def:1700227 | Date: (C)2019-10-16 (M)2024-04-17 |
Class: PATCH | Family: unix |
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.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.
Product: |
nghttp2 |
libnghttp2 |