Vulnerability Details CVE-2020-19861
When a zone file in ldns 1.7.1 is parsed, the function ldns_nsec3_salt_data is too trusted for the length value obtained from the zone file. When the memcpy is copied, the 0xfe - ldns_rdf_size(salt_rdf) byte data can be copied, causing heap overflow information leakage.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 55.1%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 5.0
References