Security Advisory
CVE-2017-9445
CVE vulnerability detail — eXtreme Datacenter Security Operations
Description
In systemd through 233, certain sizes passed to dns_packet_new in systemd-resolved can cause it to allocate a buffer thats too small. A malicious DNS server can exploit this via a response with a specially crafted TCP payload to trick systemd-resolved into allocating a buffer thats too small, and subsequently write arbitrary data beyond the end of it.