A second security flaw that could cause the new Firefox 2 browser to crash has been publicly disclosed.

The vulnerability lies in the way the open-source browser handles JavaScript code. Viewing a rigged Web page will cause the browser to exit, a representative for Mozilla, the publisher of the software, said Wednesday. Contrary to claims on security mailing lists, the bug cannot be exploited to run arbitrary code on a PC running Firefox 2, the representative said.

This flaw in the JavaScript Range object is different from the denial-of-service vulnerability in Firefox 2 that was confirmed by Mozilla last week. That bug is related to a more serious security hole, which was fixed in earlier versions of Firefox, the organization has said.

The two "crashers" are the only publicly released vulnerabilities that have been confirmed by Mozilla in the week since Firefox 2 was launched. The issues are only minor, the organization has said.

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