In dnsmasq before 2.78, if the DNS packet size does not match the expected size, the size parameter in a memset call gets a negative value. As it is an unsigned value, memset ends up writing up to 0xffffffff zero's (0xffffffffffffffff in 64 bit platforms), making dnsmasq crash.
WordPress is prone to an abuse in the Lost Password recovery action. This vulnerability allows remote attackers to pass extra parameters to the mail command and consequently execute arbitrary code via an injection crafted in HTTP_HOST request property. The attack will not leave any trace. This exploit installs an OS Agent.