CVE-2023-45288 – golang.org/x/net/http2

Package

Manager: go
Name: golang.org/x/net/http2
Vulnerable Version: >=0 <0.23.0

Severity

Level: Medium

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

EPSS: 0.66635 pctl0.98488

Details

net/http, x/net/http2: close connections when receiving too many headers 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.

Metadata

Created: 2024-04-04T21:30:32Z
Modified: 2024-05-02T18:59:04Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/04/GHSA-4v7x-pqxf-cx7m/GHSA-4v7x-pqxf-cx7m.json
CWE IDs: ["CWE-400"]
Alternative ID: GHSA-4v7x-pqxf-cx7m
Finding: F067
Auto approve: 1