CVE-2022-41717
Excessive memory growth in net/http and golang.org/x/net/http2
MEDIUM 5.3EPSS 6.1%
An attacker can cause excessive memory growth in a Go server accepting HTTP/2 requests. HTTP/2 server connections contain a cache of HTTP header keys sent by the client. While the total number of entries in this cache is capped, an attacker sending very large keys can cause the server to allocate approximately 64 MiB per open connection.
- Affected
- Go standard library · golang.org/x/net · net/http · golang.org/x/net/http2
- CVSS v3.1 NVD
- 5.3 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - EPSS
- 6.08% chance of exploitation in the next 30 days, 93rd percentile
- Published
- 2022-12-08
- Updated
- 2025-02-13
Proof-of-concept exploits (1)
- domdom82/h2conn-exploit0★ · 2022-12-22
Security advisories
- https://go.dev/cl/455635
- https://go.dev/cl/455717
- https://pkg.go.dev/vuln/GO-2022-1144
- https://go.dev/issue/56350
- https://groups.google.com/g/golang-announce/c/L_3rmdT0BMU/m/yZDrXjIiBQAJ
- advisories/GHSA-xrjj-mj9h-534m