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High 7.5
RRSIGs with too few labels can lead to bypass of DNSSEC wildcard validation
RRSIGs with too few labels can lead to bypass of DNSSEC wildcard validation
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High 7.5
ZoneToCache can poison the cache
A malicious authoritative server can send a crafted zone via the ZoneToCache function that leads to cache poisoning.
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High 8.2
Crafted delegations or IP fragments can poison cached delegations in Recursor
Crafted delegations or IP fragments can poison cached delegations in Recursor.
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High 7.5
Insufficient validation of incoming notifies over TCP can lead to a denial of service in Recursor
An attacker can trigger the removal of cached records by sending a NOTIFY query over TCP.
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High 7.5
A Recursor configured to send out ECS enabled queries can be sensitive to spoofing attempts
An attacker spoofing answers to ECS enabled requests sent out by the Recursor has a chance of success higher than non-ECS enabled queries. The updated version include various mitigations against spoofing attempts of ECS enabled queries by chaining ECS enabled…
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High 7.5
A crafted zone can lead to an illegal memory access in the PowerDNS Recursor
An attacker can publish a zone containing specific Resource Record Sets. Processing and caching results for these sets can lead to an illegal memory accesses and crash of the Recursor, causing a denial of service. The remedy is: upgrade to the patched 5.2.1 v…
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High 7.5
Crafted responses can lead to a denial of service due to cache inefficiencies in the Recursor
An attacker can publish a zone containing specific Resource Record Sets. Repeatedly processing and caching results for these sets can lead to a denial of service.
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High 7.5
Crafted responses can lead to a denial of service in Recursor if recursive forwarding is configured
A crafted response from an upstream server the recursor has been configured to forward-recurse to can cause a Denial of Service in the Recursor. The default configuration of the Recursor does not use recursive forwarding and is not affected.