CVE-2023-45288
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.
- CVE Status
- PUBLISHED
- NVD Status
- Awaiting Analysis
- CNA
- Go Project
- Published Date
-
2024-04-04 21:15:16
(5 months ago) - Updated Date
-
2024-08-26 21:35:02
(3 weeks ago)