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.
Veri: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Bilgiler kaynaktaki haliyle, İngilizce yayımlanır.
| Üretici | Ürün | Sürümler | |
|---|---|---|---|
| Go standard library | net/http | < 1.21.9, 1.22.0-0 – < 1.22.2 | |
| golang | http2 | < 0.23.0 | |
| golang.org/x/net | golang.org/x/net/http2 | < 0.23.0 |
Ücretsiz ve açık kaynak honeypot sensörümüz, sunucunuzun kullanmadığı portlarda bekler; bağlanan tarayıcıları ve saldırganları ortak kara listeye bildirir.
