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-2023-45288 - High Severity Vulnerability
[mirror] Go supplementary network libraries
Dependency Hierarchy: - github.com/kubernetes-sigs/controller-runtime/pkg/envtest-v0.9.0-beta.2 (Root Library) - github.com/kubernetes/apimachinery/pkg/api/errors-v0.21.1 - k8s.io/apimachinery/pkg/apis/meta/v1 - github.com/kubernetes/apimachinery/pkg/watch-v0.21.1 - github.com/kubernetes/apimachinery/pkg/util/net-v0.21.1 - :x: **github.com/golang/net/http2-v0.1.0** (Vulnerable Library)
Found in HEAD commit: 961a945557d91aa70b76ea2b5d40d5f1491f384c
Found in base branch: master
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.
Publish Date: 2024-04-04
URL: CVE-2023-45288
Base Score Metrics: - Exploitability Metrics: - Attack Vector: Network - Attack Complexity: Low - Privileges Required: None - User Interaction: None - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: None - Integrity Impact: None - Availability Impact: High
For more information on CVSS3 Scores, click here.Type: Upgrade version
Release Date: 2023-10-06
Fix Resolution: golang/net - v0.23.0
Step up your Open Source Security Game with Mend here