Scientific Linux Security Update : ruby on SL3.x, SL4.x, SL5.x i386/x86_64

The Ruby DNS resolver library, resolv.rb, used predictable transaction IDs and a fixed source port when sending DNS requests. A remote attacker could use this flaw to spoof a malicious reply to a DNS query. CVE-2008-3905 Ruby's XML document parsing module REXML was prone to a denial of service...