Some HTTP/2 implementations are vulnerable to a header leak, potentially leading to a denial of service. The attacker sends a stream of headers with a 0-length header name and 0-length header value, optionally Huffman encoded into 1-byte or greater headers. Some implementations allocate memory for these headers and keep the allocation alive until the session dies. This can consume excess memory.
                
            Metrics
Affected Vendors & Products
References
        History
                    Wed, 16 Jul 2025 13:45:00 +0000
| Type | Values Removed | Values Added | 
|---|---|---|
| Metrics | epss 
 | epss 
 | 
Tue, 14 Jan 2025 19:45:00 +0000
| Type | Values Removed | Values Added | 
|---|---|---|
| CPEs | cpe:2.3:o:synology:diskstation_manager:6.2:*:*:*:*:*:*:* | 
 MITRE
                        MITRE
                    Status: PUBLISHED
Assigner: certcc
Published: 2019-08-13T20:50:59
Updated: 2024-08-04T21:54:44.285Z
Reserved: 2019-03-01T00:00:00
Link: CVE-2019-9516
 Vulnrichment
                        Vulnrichment
                    No data.
 NVD
                        NVD
                    Status : Modified
Published: 2019-08-13T21:15:12.583
Modified: 2025-01-14T19:29:55.853
Link: CVE-2019-9516
 Redhat
                        Redhat