OpenTelemetry-Go Contrib is a collection of third-party packages for OpenTelemetry-Go. A handler wrapper out of the box adds labels `http.user_agent` and `http.method` that have unbound cardinality. It leads to the server's potential memory exhaustion when many malicious requests are sent to it. HTTP header User-Agent or HTTP method for requests can be easily set by an attacker to be random and long. The library internally uses `httpconv.ServerRequest` that records every value for HTTP `method` and `User-Agent`. In order to be affected, a program has to use the `otelhttp.NewHandler` wrapper and not filter any unknown HTTP methods or User agents on the level of CDN, LB, previous middleware, etc. Version 0.44.0 fixed this issue when the values collected for attribute `http.request.method` were changed to be restricted to a set of well-known values and other high cardinality attributes were removed. As a workaround to stop being affected, `otelhttp.WithFilter()` can be used, but it requires manual careful configuration to not log certain requests entirely. For convenience and safe usage of this library, it should by default mark with the label `unknown` non-standard HTTP methods and User agents to show that such requests were made but do not increase cardinality. In case someone wants to stay with the current behavior, library API should allow to enable it.
Metrics
Affected Vendors & Products
References
History
Wed, 16 Oct 2024 02:30:00 +0000
Type | Values Removed | Values Added |
---|---|---|
CPEs | cpe:/a:redhat:openshift:4.17::el9 |
Fri, 06 Sep 2024 13:30:00 +0000
Type | Values Removed | Values Added |
---|---|---|
CPEs | cpe:/a:redhat:acm:2.10::el9 |
MITRE
Status: PUBLISHED
Assigner: GitHub_M
Published: 2023-10-12T16:33:21.435Z
Updated: 2024-08-02T20:14:19.751Z
Reserved: 2023-10-04T16:02:46.330Z
Link: CVE-2023-45142
Vulnrichment
No data.
NVD
Status : Modified
Published: 2023-10-12T17:15:09.990
Modified: 2024-11-21T08:26:25.920
Link: CVE-2023-45142
Redhat