wireshark: multiple vulnerabilities

From the Red Hat Bugzilla [1, 2]:

CVE-2012-1593: A NULL pointer dereference flaw was found in the way ANSI A dissector of the Wireshark, a network traffic analyzer, processed certain capture files (those causing wireshark to pass NULL packet information via a global variable to the call_dissector() routine). A remote attacker could provide a specially-crafted packet capture file, which once opened by a local unsuspecting user would lead to wireshark executable crash.

CVE-2012-1594: A denial of service flaw was found in the way IEEE 802.11 dissector of Wireshark, a network traffic analyzer, processed certain capture files (16-bit integers were used as counters during loading of capture files for certain protocols). A remote attacker could provide a specially-crafted packet capture file, which once opened by a local unsuspecting user would lead to situation, where wireshark executable would never finish loading of such capture file (infinite loop).