FULL PRODUCT VERSION :
java version "1.7.0_45"
Java(TM) SE Runtime Environment (build 1.7.0_45-b18)
Java HotSpot(TM) 64-Bit Server VM (build 24.45-b08, mixed mode)


ADDITIONAL OS VERSION INFORMATION :
jsailor@karkat-vm-ubuntu1:~/bug$ uname -a
Linux karkat-vm-ubuntu1 3.11.0-15-generic #23-Ubuntu SMP Mon Dec 9 18:17:04 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
jsailor@karkat-vm-ubuntu1:~/bug$ lsb_release -a
No LSB modules are available.
Distributor ID:Ubuntu
  Description:Ubuntu 13.10
  Release:13.10
Codename:saucy
jsailor@karkat-vm-ubuntu1:~/bug$

Also present with java 1.6 on CentOS 6, and 1.7u45 on OSX 10.8

A DESCRIPTION OF THE PROBLEM :
When the java command line launcher is run with the "-jar" option and given a path to a jar file which contains a colon, it fails to launch, incorrectly interpreting the file path as a classpath (with >1 entry.)

While the launcher correctly treats the argument as a file path for purpose of determining the main class (i.e. opening the jar file, reading the manifest, getting the Main-Class), it sets the classpath directly to the value of the argument, which breaks.

The OpenJDK source contains the following (in hotspot/src/share/tools/launcher/java.c) which would cause the issue:

    /* Override class path if -jar flag was specified */
    if (jarfile != 0) {
        SetClassPath(jarfile);
    }


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
jsailor@karkat-vm-ubuntu1:~/bug$ find .
./src/MANIFEST.MF
./src/Main.java
./with:colon/
./withoutColon/
jsailor@karkat-vm-ubuntu1:~/bug$ tail src/*
==> src/Main.java <==
public class Main {
    public static void main(String[] args) {
    System.out.println("ok");
    }
}

==> src/MANIFEST.MF <==
Main-Class: Main
jsailor@karkat-vm-ubuntu1:~/bug$ (cd src/ && javac *.java && jar cfm run.jar MANIFEST.MF *.class)
jsailor@karkat-vm-ubuntu1:~/bug$

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
jsailor@karkat-vm-ubuntu1:~/bug$ cp src/run.jar withoutColon/
jsailor@karkat-vm-ubuntu1:~/bug$ java -jar withoutColon/run.jar
ok
jsailor@karkat-vm-ubuntu1:~/bug$
ACTUAL -
jsailor@karkat-vm-ubuntu1:~/bug$ cp src/run.jar with:colon
jsailor@karkat-vm-ubuntu1:~/bug$ java -jar with:colon/run.jar
Error: Could not find or load main class Main
jsailor@karkat-vm-ubuntu1:~/bug$

ERROR MESSAGES/STACK TRACES THAT OCCUR :
Error: Could not find or load main class Main


REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
See above
---------- END SOURCE ----------