Unbounded HTTP response body read in OpenTelemetry.Sampler.AWS

The AWS X-Ray Remote Sampler package provides a sampler which can get sampling configurations from AWS X-Ray. Prior to 0.1.0-alpha.8, OpenTelemetry.Sampler.AWS reads unbounded HTTP response bodies from a configured AWS X-Ray remote sampling endpoint into memory. AWSXRaySamplerClient.DoRequestAsync called HttpClient.SendAsync followed by ReadAsStringAsync(), which materializes the entire HTTP response body into a single in-memory string with no size limit. The sampling endpoint is configurable via AWSXRayRemoteSamplerBuilder.SetEndpoint (default: http://localhost:2000). An attacker who controls the configured endpoint, or who can intercept traffic to it (MitM), can return an arbitrarily large response body. This causes unbounded heap allocation in the consuming process, leading to high transient memory pressure, garbage-collection stalls, or an OutOfMemoryException that terminates the process. This vulnerability is fixed in 0.1.0-alpha.8.

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

不加限制或调节的资源分配

OpenTelemetry .NET Contrib 安全漏洞

OpenTelemetry .NET Contrib是OpenTelemetry - CNCF开源的一个开源遥测数据收集与处理工具库。 OpenTelemetry .NET Contrib 0.1.0-alpha.8之前版本存在安全漏洞，该漏洞源于读取未限制大小的HTTP响应体，可能导致堆内存分配无限制，造成拒绝服务。

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