Technical Description

A vulnerability has been identified in IBM Lotus Notes, which could be exploited by remote attackers to bypass security restrictions and compromise a vulnerable system. This issue is caused by an error in the Execution Control List (ECL) mechanism when forwarding email messages containing unsigned applets, which could be exploited by attackers to cause an unsigned applet to be signed by tricking a user into forwarding a malicious email containing the applet to another user (with the "Enable Java Applets" option enabled within User Preferences) using Lotus Notes, leading to the execution of arbitrary code with the permissions of the final user.

Affected Products

IBM Lotus Notes versions 6.x
IBM Lotus Notes versions 7.x
IBM Lotus Notes versions 8.x

Solution

VUPEN Security is not aware of any vendor-supplied patch.

Disable the "Enable Java Applets" option.

References

http://www.vupen.com/english/advisories/2008/0600
http://www-1.ibm.com/support/docview.wss?uid=swg21257250

Credits

Vulnerability reported by David Gloede.

ChangeLog

2008-02-19 : Initial release

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