DNS reverse lookups can be used as a vector of attack for the bash shellshock vulnerability.

Red Hat Security Advisory 2014-1400-01 – Apache POI is a library providing Java API for working with OOXML document files. It was found that Apache POI would resolve entities in OOXML documents. A remote attacker able to supply OOXML documents that are parsed by Apache POI could use this flaw to read files accessible to the user running the application server, and potentially perform more advanced XML External Entity attacks. It was found that Apache POI would expand an unlimited number of entities in OOXML documents. A remote attacker able to supply OOXML documents that are parsed by Apache POI could use this flaw to trigger a denial of service attack via excessive CPU and memory consumption.

Red Hat Security Advisory 2014-1399-01 – Apache POI is a library providing Java API for working with OOXML document files. It was found that Apache POI would resolve entities in OOXML documents. A remote attacker able to supply OOXML documents that are parsed by Apache POI could use this flaw to read files accessible to the user running the application server, and potentially perform more advanced XML External Entity attacks. It was found that Apache POI would expand an unlimited number of entities in OOXML documents. A remote attacker able to supply OOXML documents that are parsed by Apache POI could use this flaw to trigger a denial of service attack via excessive CPU and memory consumption.

Red Hat Security Advisory 2014-1398-01 – Apache POI is a library providing Java API for working with OOXML document files. It was found that Apache POI would resolve entities in OOXML documents. A remote attacker able to supply OOXML documents that are parsed by Apache POI could use this flaw to read files accessible to the user running the application server, and potentially perform more advanced XML External Entity attacks. It was found that Apache POI would expand an unlimited number of entities in OOXML documents. A remote attacker able to supply OOXML documents that are parsed by Apache POI could use this flaw to trigger a denial of service attack via excessive CPU and memory consumption.

Red Hat Security Advisory 2014-1397-01 – The rsyslog packages provide an enhanced, multi-threaded syslog daemon that supports writing to relational databases, syslog/TCP, RFC 3195, permitted sender lists, filtering on any message part, and fine grained output format control. A flaw was found in the way rsyslog handled invalid log message priority values. In certain configurations, a local attacker, or a remote attacker able to connect to the rsyslog port, could use this flaw to crash the rsyslog daemon or, potentially, execute arbitrary code as the user running the rsyslog daemon.