In NLnet Labs Routinator prior to 0.10.2, a validation run can be delayed significantly by an RRDP repository by not answering but slowly drip-feeding bytes to keep the connection alive. This can be used to effectively stall validation. While Routinator has a configurable time-out value for RRDP connections, this time-out was only applied to individual read or write operations rather than the complete request. Thus, if an RRDP repository sends a little bit of data before that time-out expired, it can continuously extend the time it takes for the request to finish. Since validation will only continue once the update of an RRDP repository has concluded, this delay will cause validation to stall, leading to Routinator continuing to serve the old data set or, if in the initial validation run directly after starting, never serve any data at all.
History

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cve-icon MITRE

Status: PUBLISHED

Assigner: NLnet Labs

Published: 2021-11-09T16:41:40.253923Z

Updated: 2024-09-16T18:18:51.653Z

Reserved: 2021-11-01T00:00:00

Link: CVE-2021-43173

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2021-11-09T17:15:07.733

Modified: 2022-08-09T13:42:01.120

Link: CVE-2021-43173

cve-icon Redhat

No data.