The highest threat from this vulnerability is to data integrity. If chained with CVE-2020-25684 the attack complexity of a successful attack is reduced. This flaw could be abused to perform a DNS Cache Poisoning attack. This is in contrast with RFC5452, which specifies that the query name is one of the attributes of a query that must be used to match a reply. the October Android security update will contain a fix for these. This tool is widely used in small and medium business environments and.

Due to the weak hash (CRC32 when dnsmasq is compiled without DNSSEC, SHA-1 when it is) this flaw allows an off-path attacker to find several different domains all having the same hash, substantially reducing the number of attempts they would have to perform to forge a reply and get it accepted by dnsmasq. 'The CVE-2017-14491 bug is classified as being an RCE bug exploitable through crafted DNS replies. Dnsmasq is a small and easy-to-use DNS and DHCP configuration tool that provides the DNS function and optional DHCP function. When getting a reply from a forwarded query, dnsmasq checks in forward.c:reply_query(), which is the forwarded query that matches the reply, by only using a weak hash of the query name. A flaw was found in dnsmasq before version 2.83.

Fix cve-2017-14491 for mac