DoS vulnerability for high cardinality metrics in opentelemetry-go-contrib

opentelemetry-go-contrib is a collection of extensions for OpenTelemetry-Go. The v0.38.0 release of `go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp` uses the `httpconv.ServerRequest` function to annotate metric measurements for the `http.server.request_content_length`, `http.server.response_content_length`, and `http.server.duration` instruments. The `ServerRequest` function sets the `http.target` attribute value to be the whole request URI (including the query string)[^1]. The metric instruments do not "forget" previous measurement attributes when `cumulative` temporality is used, this means the cardinality of the measurements allocated is directly correlated with the unique URIs handled. If the query string is constantly random, this will result in a constant increase in memory allocation that can be used in a denial-of-service attack. This issue has been addressed in version 0.39.0. Users are advised to upgrade. There are no known workarounds for this issue.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

未加控制的资源消耗(资源穷尽)

OpenTelemetry-Go Contrib 资源管理错误漏洞

OpenTelemetry-Go Contrib是OpenTelemetry开源的一个 OpenTelemetry Go的扩展集合。 OpenTelemetry-Go Contrib v0.38.0版本存在资源管理错误漏洞，该漏洞源于如果查询字符串始终是随机的，这将导致内存分配的不断增加，可用于拒绝服务攻击。

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