Malicious Java applet security flaw in ClassLoader Vulnerability

BID:164

Info

Malicious Java applet security flaw in ClassLoader Vulnerability

Bugtraq ID: 164
Class: Unknown
CVE:
Remote: Yes
Local: No
Published: Jul 14 1998 12:00AM
Updated: Jul 14 1998 12:00AM
Credit: This vulnerability was discovered by Princeton University's Safe Internet Programming Team. A post about it was sent to the Bugtraq mailing list on July 17, 1998 by Gary McGraw <[email protected]>
Vulnerable: Netscape Communicator 4.0
- Caldera OpenLinux Desktop 2.3
- Caldera OpenLinux eBuilder 3.0
- Mandriva Linux Mandrake 7.1
- Mandriva Linux Mandrake 7.0
- Mandriva Linux Mandrake 6.1
- Mandriva Linux Mandrake 6.0
- Microsoft Windows 2000 Professional
- Microsoft Windows 95
- Microsoft Windows 98
- Microsoft Windows NT 4.0
- Redhat Linux 6.2 sparc
- Redhat Linux 6.2 i386
- Redhat Linux 6.2 alpha
- Redhat Linux 6.1 sparc
- Redhat Linux 6.1 i386
- Redhat Linux 6.1 alpha
- Redhat Linux 6.0 sparc
- Redhat Linux 6.0 alpha
- Redhat Linux 6.0
- Redhat Linux 5.2 sparc
- Redhat Linux 5.2 i386
- Redhat Linux 5.2 alpha
- SCO eDesktop 2.4
- SCO eServer 2.3
- SuSE Linux 7.0
Not Vulnerable:

Discussion

Malicious Java applet security flaw in ClassLoader Vulnerability

A vulnerability exists in the Java implementation included in Netscape Navigator/Communicator 4.0x that allows a malicious applet to disable all security controls. Once these controls have been deactivated, the applet can execute arbitrary code on the machine being attacked.

Exploit / POC

Malicious Java applet security flaw in ClassLoader Vulnerability

Currently the SecurityFocus staff are not aware of any exploits for this issue. If you feel we are in error or are aware of more recent information, please mail us at: [email protected].

Solution / Fix

Malicious Java applet security flaw in ClassLoader Vulnerability

Solution:
Netscape has issued patches against this vulnerability. These are available at ftp://ftp.netscape.com. A suitable temporary solution, should you believe yourself vulnerable, is to disable the execution of Java applets.

References

Malicious Java applet security flaw in ClassLoader Vulnerability

References:

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