Ubuntu: (Multiple Advisories) (CVE-2020-19861): ldns vulnerabilities
5
(AV:N/AC:L/Au:N/C:P/I:N/A:N)
01/21/2022
02/03/2022
02/01/2022
03/22/2023
Description
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.
Solution(s)
- ubuntu-upgrade-libldns1
- ubuntu-upgrade-libldns2
- ubuntu-upgrade-libldns3
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