NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_proxy_v2_module and ngx_http_grpc_module modules. This vulnerability exists when the proxy_http_version to 2 or grpc_pass directives are used to proxy HTTP/2 traffic, the ignore_invalid_headers directive is set to off, and the large_client_header_buffers directive size is larger than 2 megabytes. A remote, unauthenticated attacker, along with conditions beyond their control, could send large headers while creating an upstream request. This may cause a heap-based buffer overflow in the NGINX worker process leading to a restart. Additionally, attackers can execute code on systems with Address Space Layout Randomization (ASLR) disabled or when the attacker can bypass ASLR. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
| Vendor | Product | Versions |
|---|---|---|
| f5 | dos | 1.13.10, 1.30.2, 37.0, R36 |
Downstream vendors/products affected by this vulnerability
| Vendor | Product | Source | Confidence |
|---|---|---|---|
| f5 | waf | cve_cpe | 95% |
| f5 | nginx_ingress_controller | cve_cpe | 95% |
| f5 | nginx_instance_manager | cve_cpe | 95% |
| f5 | nginx_app_protect_dos | cve_cpe | 95% |
| f5 | nginx_gateway_fabric | cve_cpe | 95% |
Updated severity to CRITICAL, CVSS score to 9.2, added new affected versions, and marked exploit as available.
Updated severity to CRITICAL, added new CWE-416, and marked the vulnerability as actively exploited.
Updated severity to CRITICAL and patch available to version 1.31.1.
Initial creation
