Apple patches 6 Safari security vulnerabilities
Top Sites flaw lets criminals insert malicious sites into thumbnail view
Computerworld - A month after it last patched Safari, Apple today plugged six security holes, four of them critical, in its Mac and Windows Web browser.
Safari 4.0.3 fixes six flaws in the Windows XP and Vista edition, but only four in the Mac OS X edition. Three of the half-dozen bugs were in WebKit, the open-source browser engine that powers Safari, as well as Google's Chrome.
Four of the vulnerabilities patched today were described by Apple as possibly allowing "arbitrary code execution," company-speak for a critical bug that, if exploited, could let hackers dump malicious software on the machine or hijack it for their own use.
The most unusual flaw is in "Top Sites", a feature Apple introduced in Safari 4.0 that presents users with thumbnails of frequently-visited sites when they launch the browser or open a new tab.
"It is possible for a malicious website to promote arbitrary sites into the Top Sites view through automated actions," warned Apple in its accompany security advisory. "This could be used to facilitate a phishing attack." Apple fixed the flaw by preventing automated site visits from affecting the Top Sites list.
Other bugs that 4.0.3 addresses include heap and buffer overflows in the Windows version caused by too-long text strings and image metadata handling errors, respectively; a buffer overflow in WebKit's parsing of floating point numbers; a problem with plug-ins that could let hackers steal confidential information; and a URL-spoofing vulnerability that could be exploited by identity thieves.
Apple last patched Safari in early July, about a month after the company officially launched the browser at its annual developers conference in San Francisco.
Safari 4.0.3 for Windows or Mac can be downloaded from Apple's site; current users of the browser can obtain the new version by running Software Update on the Mac, or the bundled Apple Software Update on Windows.
According to Web metrics company Net Applications, Safari had an estimated worldwide market share of 4.1% during July.
Read more about Security in Computerworld's Security Topic Center.
- Radicati: Cloud Business Email - Market Quadrant 2013 Google was named the top cloud business email provider in a recent report by research firm Radicati. Out of 14 key players, Google...
- Tablets in the Enterprise: A Checklist for Successful Deployment How can you enterprise manage and secure tablets in order to protect corporate data while providing access to the information and applications employees...
- Enterprise Mobility: A Checklist for Secure Containerization The advantages and disadvantages of the multiple approaches to containerization. Learn More>>
- Enterprise File Sync & Share Checklist File sync and share has changed the way people work and collaborate in today's tech-savvy world. Gone are the email roadblocks, clunky FTP...
- Live Webcast LIVE EVENT: 5/7, The End of Data Protection As We Know It. Introducing a Next Generation Data Protection Architecture. Traditional backup is going away, but where does this leave end-users?
- LIVE EVENT: 5/7, The End of Data Protection As We Know It. Introducing a Next Generation Data Protection Architecture. Traditional backup is going away, but where does this leave end-users?
- On-demand webinar: "Mobility Mayhem: Balancing BYOD with Enterprise Security" Check out this on-demand webinar to hear Sophos senior security expert John Shier deep dive into how BYOD impacts your enterprise security strategy... All Security White Papers | Webcasts