CVE-2023-43810 Information

Description

OpenTelemetry also known as OTel for short is a vendor-neutral open-source Observability framework for instrumenting generating collecting and exporting telemetry data such as traces metrics logs. Autoinstrumentation out of the box adds the label http_method that has unbound cardinality. It leads to the server’s potential memory exhaustion when many malicious requests are sent. HTTP method for requests can be easily set by an attacker to be random and long. In order to be affected program has to be instrumented for HTTP handlers and does not filter any unknown HTTP methods on the level of CDN LB previous middleware etc. This issue has been patched in version 0.41b0.

Reference

https://github.com/open-telemetry/opentelemetry-python-contrib/releases/tag/v0.41b0 https://github.com/open-telemetry/opentelemetry-python-contrib/commit/6007e0c013071e7f8b9612d3bc68aeb9d600d74e https://github.com/open-telemetry/opentelemetry-python-contrib/security/advisories/GHSA-5rv5-6h4r-h22v