Last month an exploit was found in Safari that allowed URL Spoofing. This wasn’t a huge concern at the time but it was definitely a security issue, and in the wrong hands could be dangerous to iOS users. But it looks like with the release of iOS 5.1.1 Apple has taken care of the problem…
This vulnerability was originally discovered by MajorSecurity.net.
Luckily with the release of iOS 5.1.1 this bug has been patched!
Available for: iPhone 3GS, iPhone 4, iPhone 4S, iPod touch (3rd generation) and later, iPad, iPad 2
Impact: A maliciously crafted website may be able to spoof the address in the location bar
Description: A URL spoofing issue existed in Safari. This could be used in a malicious web site to direct the user to a spoofed site that visually appeared to be a legitimate domain. This issue is addressed through improved URL handling. This issue does not affect OS X systems.
iOS 5.1.1 is available for download now through your devices Software Update or via iTunes.
Source: Cult of Mac