{"schemaVersion":3,"id":"CVE-2021-43172","aliases":["UBUNTU-CVE-2021-43172","DEBIAN-CVE-2021-43172","GHSA-m3x9-623g-35c4"],"status":"published","duplicateOf":null,"title":null,"description":"NLnet Labs Routinator prior to 0.10.2 happily processes a chain of RRDP repositories of infinite length causing it to never finish a validation run. In RPKI, a CA can choose the RRDP repository it wishes to publish its data in. By continuously generating a new child CA that only consists of another CA using a different RRDP repository, a malicious CA can create a chain of CAs of de-facto infinite length. Routinator prior to version 0.10.2 did not contain a limit on the length of such a chain and will therefore continue to process this chain forever. 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