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PowerDNS Recursor up to 4.3.0 gethostname out-of-bounds read

A vulnerability was found in PowerDNS Recursor up to 4.3.0 (Domain Name Software). It has been rated as critical. Affected by this issue is the function gethostname. There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.