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Reason for revert: this commit doesn't resolve real security issues, while it complicates the resulting code in subtle ways (aka security circus). Comparison of two strings (passwords, auth keys) takes a few nanoseconds. This comparison is performed in non-trivial http handler, which takes thousands of nanoseconds, and the request handler timing is non-deterministic because of Go runtime, Go GC and other concurrently executed goroutines. The request handler timing is even more non-deterministic when the application is executed in shared environments such as Kubernetes, where many other applications may run on the same host and use shared resources of this host (CPU, RAM bandwidth, network bandwidth). Additionally, it is expected that the passwords and auth keys are passed via TLS-encrypted connections. Establishing TLS connections takes additional non-trivial time (millions of nanoseconds), which depends on many factors such as network latency, network congestion, etc. This makes impossible to conduct timing attack on passwords and auth keys in VictoriaMetrics components. Updates https://github.com/VictoriaMetrics/VictoriaMetrics/pull/6423/files Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/6392 |
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