Despite HTTP headers having a default limit of 1MB, the number of cookies that can be parsed does not have a limit. By sending a lot of very small cookies such as a=;, an attacker can make an HTTP server allocate a large amount of structs, causing large memory consumption.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Red Hat Hardened Images | RedHat | golang1-26-main-1.26.2-1.hum1 | * |
| Red Hat Hardened Images | RedHat | golang1-25-main-1.25.9-1.hum1 | * |
| Golang-1.10 | Ubuntu | esm-infra/xenial | * |
| Golang-1.13 | Ubuntu | esm-apps/xenial | * |
| Golang-1.18 | Ubuntu | esm-apps/xenial | * |
| Golang-1.23 | Ubuntu | plucky | * |
| Golang-1.24 | Ubuntu | plucky | * |
| Golang-1.6 | Ubuntu | esm-infra/xenial | * |