Some vulnerabilities have been reported in Sun Java, which can be exploited by malicious people to bypass certain security restrictions, disclose sensitive information, cause a DoS (Denial of service), or compromise a vulnerable system.

Some vulnerabilities have been reported in Sun Java, which can be exploited by malicious people to bypass certain security restrictions, disclose sensitive information, cause a DoS (Denial of service), or compromise a vulnerable system.

1) Java Runtime Environment (JRE) creates temporary files with insufficiently random names. This can be exploited to write arbitrary JAR files and perform restricted actions on the affected system.

2) Multiple errors in the JRE image processing implementation can be exploited to cause buffer overflows.

3) Multiple errors in the JRE when processing GIF images can be exploited to cause buffer overflows.

4) Multiple errors in the JRE when processing fonts can be exploited to cause buffer overflows.

5) An error in the JRE can be exploited to establish network connections to arbitrary hosts.

6) An error when launching Java Web Start applications can be exploited by an untrusted application to e.g. read, write, or execute local files with the privileges of the user running the application.

7) An error can be exploited by an untrusted Java Web Start application to obtain the current username and the location of the Java Web Start cache.

8) An error in Java Web Start can be exploited to perform restricted actions (e.g. modify system properties).

9) An error in Java Web Start and Java Plug-in can be exploited to hijack HTTP sessions.

10) An error in the JRE applet class loading functionality can be exploited to read arbitrary files and establish network connections to arbitrary hosts.

11) An error in the Java Web Start BasicService can be exploited to open arbitrary local files in the user's browser.

12) The problem is that the "Java Update" mechanism does not check the digital signature of the downloaded update package. This be exploited to execute arbitrary code via e.g. a MitM (Man-in-the-Middle) or DNS spoofing attack.

13) A boundary error can be exploited by an untrusted Java application that is launched through the command line to cause a buffer overflow.

14) An error when deserializing calendar objects can be exploited by an untrusted Java applet to e.g. read, write, or execute local files.

15) An error in the JRE when unpacking applets can be exploited to cause a buffer overflow.

16) The UTF-8 decoder accepts encodings longer than the "shortest" form. This can potentially be exploited to trick applications using the decoder into accepting invalid sequences and e.g. disclose sensitive information via specially crafted URIs.

17) An error in the JRE can be exploited to list the contents of the user's home directory.

18) An error when processing RSA public keys can be exploited to consume large amounts of CPU.

19) An error in the JRE Kerberos authentication mechanism can be exploited to potentially exhaust operating system resources.

20) Multiple errors in the JAX-WS and JAXB JRE packages can be exploited by an untrusted Java applet to e.g. read, write, or execute local files.

21) An error when processing ZIP files can be exploited to disclose arbitrary memory locations from the host process.

22) An error can be exploited by malicious code loaded from the local filesystem to gain network access to the local host.

Please see the vendor advisories for details on affected products and versions.

Update to a fixed version.

JDK and JRE 6 Update 11:
http://java.sun.com/javase/downloads/index.jsp

JDK and JRE 5.0 Update 17:
http://java.sun.com/javase/downloads/index_jdk5.jsp

SDK and JRE 1.4.2_19:
http://java.sun.com/j2se/1.4.2/download.html

SDK and JRE 1.3.1_24 (for customers with Solaris 8 and Vintage Support Offering support contracts):
http://java.sun.com/j2se/1.3/download.html