Apache Traffic Server before 2.0.1, and 2.1.x before 2.1.2-unstable, does not properly choose DNS source ports and transaction IDs, and does not properly use DNS query fields to validate responses, which makes it easier for man-in-the-middle attackers to poison the internal DNS cache via a crafted response.
https://issues.apache.org/jira/browse/TS-425
https://exchange.xforce.ibmcloud.com/vulnerabilities/61721
http://www.securityfocus.com/bid/43111
http://www.securityfocus.com/archive/1/513598/100/0/threaded
http://www.nth-dimension.org.uk/pub/NDSA20100830.txt.asc
http://trafficserver.apache.org/