amphp/http · Security

AMPHP Denial of Service via HTTP/2 CONTINUATION Frames

GHSA ID
GHSA-qjfw-cvjf-f4fm
CVE ID
CVE-2024-2653
Severity
high
Published
Updated
CVSS
8.2 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
CVSS v3
8.2 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

Description

amphp/http will collect HTTP/2 CONTINUATION frames in an unbounded buffer and will not check the header size limit until it has received the END_HEADERS flag, resulting in an OOM crash. amphp/http-client and amphp/http-server are indirectly affected if they're used with an unpatched version of amphp/http. Early versions of amphp/http-client with HTTP/2 support (v4.0.0-rc10 to 4.0.0) are also directly affected.

Acknowledgements

Thank you to Bartek Nowotarski for reporting the vulnerability.

References