build(deps): update module go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp to v0.44.0 [security]

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp	require	minor	v0.42.0 -> v0.44.0

GitHub Vulnerability Alerts

CVE-2023-45142

Summary

This handler wrapper https://github.com/open-telemetry/opentelemetry-go-contrib/blob/5f7e6ad5a49b45df45f61a1deb29d7f1158032df/instrumentation/net/http/otelhttp/handler.go#L63-L65
out of the box adds labels

• http.user_agent
• http.method

that have unbound cardinality. It leads to the server's potential memory exhaustion when many malicious requests are sent to it.

Details

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.

PoC

Send many requests with long randomly generated HTTP methods or/and User agents (e.g. a million) and observe how memory consumption increases during it.

Impact

In order to be affected, the program has to configure a metrics pipeline, use otelhttp.NewHandler wrapper, and does not filter any unknown HTTP methods or User agents on the level of CDN, LB, previous middleware, etc.

Others

It is similar to already reported vulnerabilities

• GHSA-5r5m-65gx-7vrh (open-telemetry/opentelemetry-go-contrib)
• GHSA-cg3q-j54f-5p7p (prometheus/client_golang)

Workaround for affected versions

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.

The other possibility is to disable HTTP metrics instrumentation by passing otelhttp.WithMeterProvider option with noop.NewMeterProvider.

Solution provided by upgrading

In PR https://github.com/open-telemetry/opentelemetry-go-contrib/pull/4277, released with package version 0.44.0, 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.

References

• https://github.com/open-telemetry/opentelemetry-go-contrib/pull/4277
• https://github.com/open-telemetry/opentelemetry-go-contrib/releases/tag/v1.19.0

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[renovate]

⚠ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

♻ Renovate will retry this branch, including artifacts, only when one of the following happens:

• any of the package files in this branch needs updating, or
• the branch becomes conflicted, or
• you click the rebase/retry checkbox if found above, or
• you rename this PR's title to start with "rebase!" to trigger it manually

The artifact failure details are included below:

File name: go.sum

Command failed: docker run --rm --name=renovate_a_sidecar --label=renovate_a_child --memory=3584m -v "/tmp/worker/e9ba8b/38daf2/repos/github/keptn/go-utils":"/tmp/worker/e9ba8b/38daf2/repos/github/keptn/go-utils" -v "/tmp/worker/e9ba8b/38daf2/cache":"/tmp/worker/e9ba8b/38daf2/cache" -e GOPATH -e GOPROXY -e GOSUMDB -e GOFLAGS -e CGO_ENABLED -e GIT_CONFIG_KEY_0 -e GIT_CONFIG_VALUE_0 -e GIT_CONFIG_KEY_1 -e GIT_CONFIG_VALUE_1 -e GIT_CONFIG_KEY_2 -e GIT_CONFIG_VALUE_2 -e GIT_CONFIG_COUNT -e CONTAINERBASE_CACHE_DIR -w "/tmp/worker/e9ba8b/38daf2/repos/github/keptn/go-utils" ghcr.io/containerbase/sidecar:9.23.4 bash -l -c "install-tool golang 1.21.3 && go get -d -t ./... && go mod tidy && go mod tidy"
go: downloading gopkg.in/yaml.v3 v3.0.1
go: downloading github.com/stretchr/testify v1.8.4
go: downloading github.com/benbjohnson/clock v1.3.5
go: downloading go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.44.0
go: downloading github.com/sirupsen/logrus v1.9.3
go: downloading go.opentelemetry.io/otel v1.18.0
go: downloading go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.16.0
go: downloading go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.16.0
go: downloading go.opentelemetry.io/otel/sdk v1.16.0
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go: downloading k8s.io/api v0.27.4
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go: downloading github.com/cloudevents/sdk-go/observability/opentelemetry/v2 v2.14.0
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go: downloading go.opentelemetry.io/otel/exporters/otlp/internal/retry v1.16.0
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go: downloading github.com/nats-io/nkeys v0.4.4
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go: downloading go.opentelemetry.io/otel/exporters/otlp v0.20.1
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go: github.com/keptn/go-utils/pkg/common/observability imports
	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc imports
	go.opentelemetry.io/otel/exporters/otlp/internal: cannot find module providing package go.opentelemetry.io/otel/exporters/otlp/internal
go: github.com/keptn/go-utils/pkg/common/observability imports
	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc imports
	go.opentelemetry.io/otel/exporters/otlp/otlptrace/internal/otlpconfig imports
	go.opentelemetry.io/otel/exporters/otlp/internal/envconfig: cannot find module providing package go.opentelemetry.io/otel/exporters/otlp/internal/envconfig

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[bacherfl]

closing because changes have been merged with another PR (#609 )