JVN#16018033 Safari URL spoofing vulnerability

Overview

Apple's Safari contains a vulnerability that allows spoofing of URLs in the address bar.

Products Affected

Safari for Mac OS X (Mac OS X 10.3.x and Mac OS X 10.4.x)
Safari 3.0.2 and earlier (Mac OS X, Windows XP / Vista)
iPhone v1.0

For more information, refer to the vendor's website.

Description

Apple's Safari is a web browser installed as default with Mac OS X.
There is a problem in Safari where URLs displayed in the address bar could be spoofed to deceive Safari users.
This could be conducted by using Unicode characters that look alike to ASCII characters as URL strings.

Impact

As it is difficult for Safari users to tell whether the displayed URL is spoofed or not, an attacker could possibly conduct phising attacks.

Solution

Update the software
Apply the latest updates provided by the vendor.

For more information, refer to the vendor's website.

Vendor Status

Vendor	Link
Apple	Apple security updates (Japanese)

References

JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

Analyzed on 2007.08.02

Measures	Conditions	Severity
Access Required	Routed - can be attacked over the Internet using packets	High
Authentication	None - anonymous or no authentication (IP addresses do not count)	High
User Interaction Required	Simple - the user must be convinced to take a standard action that does not feel harmful to most users, such as click on a link or view a file	Medium
Exploit Complexity	Low - little to no expertise and/or luck required to exploit (cross-site scripting)	High

Description of each analysis measures

Credit

Tomohito Yoshino of Business Architects Inc. reported this vulnerability to IPA.
JPCERT/CC coordinated with the vendors under Information Security Early Warning Partnership.

Other Information

JPCERT Alert
JPCERT Reports
CERT Advisory
CPNI Advisory
TRnotes
CVE	CVE-2007-3742
JVN iPedia	JVNDB-2007-000560