Risk
8/3/2010
11:20 PM
George V. Hulme
George V. Hulme
Commentary
Connect Directly
RSS
E-Mail
50%
50%

On iPhone, Jailbreaking, And Security

It may not be the fashionable decision, but I choose not to jailbreak my iPhone. That's primarily out of security concerns. However, it turns out that Jailbreaking (read: pwning) an iPhone is now as simple as visiting a web page.

It may not be the fashionable decision, but I choose not to jailbreak my iPhone. That's primarily out of security concerns. However, it turns out that Jailbreaking (read: pwning) an iPhone is now as simple as visiting a web page.That's right. The Dev-Team, the group that made it relatively easy to jailbreak previous versions of the iPhone have done it again. This time, however, iPhone users need only visit a website, www.jailbreakme.com, from their mobile device to have the jailbreak completed.

According to this security advisory there are two vulnerabilities that affect Apple iOS for iPhone, iPad, and iPod that are making this possible:

The first issue is caused by a memory corruption error when processing Compact Font Format (CFF) data within a PDF document, which could be exploited by attackers to execute arbitrary code by tricking a user into visiting a specially crafted web page using Mobile Safari.

The second vulnerability is caused by an error in the kernel, which could allow attackers to gain elevated privileges and bypass sandbox restrictions.

Note: These flaws are currently being exploited by jailbreakme to remotely jailbreak Apple devices.

This makes the www.jailbreakme.com Web site work much the same way a drive-by Web exploit works, but only with permission of the user. So maybe we dub this service a "drive-through" exploit :-)

Now, thanks to a recent decision by the Copyright Office and Librarian of Congress regarding the Digital Millennium Copyright Act (DMCA) - jailbreaking one's iPhone is now legal. Though could result in losing your Apple warranty. While I welcome this DMCA decision, as we should be able to tinker with our gadgets, I do think this jailbreak method raises a security concern.

This is encouraging users to visit a web site to actually have their device hacked. I've no reason to believe that anything more is going on at jailbreakme.com than the rooting of the iOS devices - but exploiting these vulnerabilities does enable remote users to gain control of the device. So it's quite easy to see how malicious attackers could socially engineer users to "jailbreak" their device and also insert a keystroke logger, traffic sniffer, of bot onto the iPhone, iPod, or iPad.

Just as it's not a great idea for credit card companies and banks to e-mail users links back to their sites within e-mails, as it makes it easier for phishers to lure customers to malicious sites: it's not a good idea to have people going to web sites to have their phones jailbroken.

Speaking of malicious attackers: These vulnerabilities make it very easy to hack an iOS powered device by merely opening an Adobe PDF file. So I'd suggest avoiding them completely on the Web until Apple issues a patch.

Apple is currently "looking into" the report of the software vulnerabilities, according to this post by AppleInsider. I'd expect a patch to become available soon.

For my security and technology tweets throughout the day, find me on Twitter.

Comment  | 
Print  | 
More Insights
Register for Dark Reading Newsletters
Partner Perspectives
What's This?
In a digital world inundated with advanced security threats, Intel Security seeks to transform how we live and work to keep our information secure. Through hardware and software development, Intel Security delivers robust solutions that integrate security into every layer of every digital device. In combining the security expertise of McAfee with the innovation, performance, and trust of Intel, this vision becomes a reality.

As we rely on technology to enhance our everyday and business life, we must too consider the security of the intellectual property and confidential data that is housed on these devices. As we increase the number of devices we use, we increase the number of gateways and opportunity for security threats. Intel Security takes the “security connected” approach to ensure that every device is secure, and that all security solutions are seamlessly integrated.
Featured Writers
White Papers
Cartoon
Current Issue
Dark Reading's October Tech Digest
Fast data analysis can stymie attacks and strengthen enterprise security. Does your team have the data smarts?
Flash Poll
Video
Slideshows
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2013-3304
Published: 2014-10-30
Directory traversal vulnerability in Dell EqualLogic PS4000 with firmware 6.0 allows remote attackers to read arbitrary files via a .. (dot dot) in the default URI.

CVE-2013-7409
Published: 2014-10-30
Buffer overflow in ALLPlayer 5.6.2 through 5.8.1 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long string in a .m3u (playlist) file.

CVE-2014-3446
Published: 2014-10-30
SQL injection vulnerability in wcm/system/pages/admin/getnode.aspx in BSS Continuity CMS 4.2.22640.0 allows remote attackers to execute arbitrary SQL commands via the nodeid parameter.

CVE-2014-3584
Published: 2014-10-30
The SamlHeaderInHandler in Apache CXF before 2.6.11, 2.7.x before 2.7.8, and 3.0.x before 3.0.1 allows remote attackers to cause a denial of service (infinite loop) via a crafted SAML token in the authorization header of a request to a JAX-RS service.

CVE-2014-3623
Published: 2014-10-30
Apache WSS4J before 1.6.17 and 2.x before 2.0.2, as used in Apache CXF 2.7.x before 2.7.13 and 3.0.x before 3.0.2, when using TransportBinding, does properly enforce the SAML SubjectConfirmation method security semantics, which allows remote attackers to conduct spoofing attacks via unspecified vect...

Best of the Web
Dark Reading Radio
Archived Dark Reading Radio
Follow Dark Reading editors into the field as they talk with noted experts from the security world.