Multiple unspecified vulnerabilities in the Java Runtime Environment in Sun JDK and JRE 6 Update 1 and earlier, and 5.0 Update 13 and earlier, allow context-dependent attackers to gain privileges via an untrusted (1) application or (2) applet, as demonstrated by an application or applet that grants itself privileges to (a) read local files, (b) write to local files, or (c) execute local programs.

Sun Java JRE 1.1.x through 1.4.x writes temporary files with long filenames that become predictable on a file system that uses 8.3 style short names, which allows remote attackers to write arbitrary files to known locations and facilitates the exploitation of vulnerabilities in applications that rely on unpredictable file names.