curl: DNS domain search list followed for extant domain missing A or AAAA records

Summary: Curl calls getaddrinfo to resolve a domain's addresses, however glibc will continue though the domain search list to find data even if it gets a NODATA response. When using AFUNSPEC in the aihints, this search will stop at the first domain with either an A or AAAA record, however when...

dnspython: denial of service in stub resolver

The dnspython stub resolver is vulnerable to a denial of service DoS risk if an attacker sends a malicious response forged with the correct address and port before a legitimate one arrives on the UDP port used by dnspython for the query. In such cases, dnspython could either switch to another...