OpenTelemetry dotnet is a dotnet telemetry framework. From 1.13.1 to before 1.15.2, When exporting telemetry over gRPC using the OpenTelemetry Protocol (OTLP), the exporter may parse a server-provided grpc-status-details-bin trailer during retry handling. Prior to the fix, a malformed trailer could encode an extremely large length-delimited protobuf field which was used directly for allocation, allowing excessive memory allocation and potential denial of service (DoS). This vulnerability is fixed in 1.15.2.
Exploitability
AV:AAC:HPR:NUI:NScope
S:UImpact
C:NI:NA:H5.3/CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:HOther