Improper Handling of Exceptional Conditions Affecting fort-validator Open this link in a new tab package, versions <1.5.3-1

  • Attack Complexity


  • Integrity


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  • snyk-id


  • published

    28 Dec 2021

  • disclosed

    9 Nov 2021

How to fix?

Upgrade Debian:12 fort-validator to version 1.5.3-1 or higher.

NVD Description

Note: Versions mentioned in the description apply to the upstream fort-validator package. See How to fix? for Debian:12 relevant versions.

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.