CVE-2023-45288

Source
https://nvd.nist.gov/vuln/detail/CVE-2023-45288
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-45288.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2023-45288
Aliases
Downstream
Related
Published
2024-04-04T21:15:16Z
Modified
2025-08-09T20:01:26Z
Summary
[none]
Details

An attacker may cause an HTTP/2 endpoint to read arbitrary amounts of header data by sending an excessive number of CONTINUATION frames. Maintaining HPACK state requires parsing and processing all HEADERS and CONTINUATION frames on a connection. When a request's headers exceed MaxHeaderBytes, no memory is allocated to store the excess headers, but they are still parsed. This permits an attacker to cause an HTTP/2 endpoint to read arbitrary amounts of header data, all associated with a request which is going to be rejected. These headers can include Huffman-encoded data which is significantly more expensive for the receiver to decode than for an attacker to send. The fix sets a limit on the amount of excess header frames we will process before closing a connection.

References

Affected packages