Sensitive query parameters logged by default in OpenTelemetry.Instrumentation http and AspNetCore
## Impact `OpenTelemetry.Instrumentation.Http` writes the `url.full` attribute/tag on spans (`Activity`) when tracing is enabled for outgoing http requests and `OpenTelemetry.Instrumentation.AspNetCore` writes the `url.query` attribute/tag on spans (`Activity`) when tracing is enabled for incoming http requests. These attributes are defined by the [Semantic Conventions for HTTP Spans](https://github.com/open-telemetry/semantic-conventions/blob/main/docs/http/http-spans.md). Up until the `1.8.1` the values written by `OpenTelemetry.Instrumentation.Http` & `OpenTelemetry.Instrumentation.AspNetCore` will pass-through the raw query string as was sent or received (respectively). This may lead to sensitive information (e.g. EUII - End User Identifiable Information, credentials, etc.) being leaked into telemetry backends (depending on the application(s) being instrumented) which could cause privacy and/or security incidents. Note: Older versions of `OpenTelemetry.Instrumentation.Http` & `OpenTelemetry.Instrumentation.AspNetCore` may use different tag names but have the same vulnerability. ## Resolution The `1.8.1` versions of `OpenTelemetry.Instrumentation.Http` & `OpenTelemetry.Instrumentation.AspNetCore` will now redact by default all values detected on transmitted or received query strings. Example transmitted or received query sting: `?key1=value1&key2=value2` Example of redacted value written on telemetry: `?key1=Redacted&key2=Redacted`
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2024-32028US | — | — | ||
OpenTelemetry dotnet is a dotnet telemetry framework. In affected versions of `OpenTelemetry.Instrumentation.Http` and `OpenTelemetry.Instrumentation.AspNetCore` the `url.full` wri… | ||||
references
External citations — patches, advisories, analysis.
- https://github.com/open-telemetry/opentelemetry-dotnetPACKAGE
- https://github.com/open-telemetry/opentelemetry-dotnet/commit/e222ecb5942d4ce1cadfd4306c39e3f4933a5c42WEB
- https://github.com/open-telemetry/opentelemetry-dotnet/security/advisories/GHSA-vh2m-22xx-q94fWEB
- https://github.com/open-telemetry/semantic-conventions/blob/main/docs/http/http-spans.mdWEB
- https://nvd.nist.gov/vuln/detail/CVE-2024-32028ADVISORY
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