IBM's 1.4.2 SR11 Java release includes the IBM Java 2 Runtime Environment and the IBM Java 2 Software Development Kit.
A flaw was found in the Java XSLT processing classes. An untrusted application or applet could cause a denial of service, or execute arbitrary code with the permissions of the user running the JRE. (CVE-2008-1187)
A buffer overflow flaw was found in Java Web Start (JWS). An untrusted application using the Java Network Launch Protocol (JNLP) could access local files or execute local applications accessible to the user running the JRE. (CVE-2008-1196)
All users of java-1.4.2-ibm are advised to upgrade to these updated packages, which contain IBM's 1.4.2 SR11 Java release which resolves these issues.