Vulnerabilities / Threats
11/18/2011
12:40 PM
Grant Moerschel
Grant Moerschel
Commentary
Connect Directly
Twitter
RSS
E-Mail
50%
50%

App Freedom Vs. Corporate Security

IT has to walk a fine line when securing user-owned mobile devices.

You can't prevent employees from snapping up iPads and Droid phones, even if you wanted to. Sixty-five percent of respondents to our InformationWeek 2011 Mobile Device Management and Security Survey predict that the number of employee-owned devices accessing company data will increase. What you can do is use your leverage when they want to connect to business systems by asking them to run mobile device management (MDM) software, which can enforce corporate policies and provide features such as device tracking and remote wiping.

Even though it's a fair trade, IT must still tread carefully, because the enterprise is permitting access by a device it doesn't own. A key challenge is to craft policies that provide adequate security assurance while at the same time respecting the owner's personal application and usage choices. After all, users who shell out hundreds of dollars for slick new tablets are going to install whatever applications they want.

The tension between ownership and protection often boils over when IT tries to push policies that whitelist or blacklist apps in response to attackers unleashing malicious software that targets mobile platforms.

Dangerous Markets

This problem is particularly acute for Android, which has an enormous user base and a flexible app market. Tim Wyatt, principal security engineer at Lookout Mobile Security, says Android's open application distribution model allows apps to be pulled from multiple markets--including repackaged versions of legitimate apps. Malware is also on the Android Market itself. For example, according to Lookout's research, when DroidDreamLight emerged as a threat, it was found to be repackaged in 20 utility, nine porn, and five game apps in the Android Market. To make matters worse, the Android model relies on a user's ability to evaluate the permissions an app is requesting at install time.

Apple imposes stricter control over its own app market, but it's not a foolproof system. For instance, security researcher Charlie Miller developed a proof-of-concept malware app, called InstaStock, that made it into Apple's App Store--at least for a limited time.

So what's an IT policymaker to do? Risk-averse organizations will likely insist on tight policies that include app whitelisting and accept that they'll get pushback from users. Those with more liberal policies or that offer personal-device access to only nonsensitive data may elect to sidestep the issue, for now. Our advice: No matter your policy, use an app malware detection system, available from vendors such as McAfee, Symantec, and smaller players such as Lookout, that can be pushed as a mandatory installation via an MDM platform.

As with conventional antivirus packages for PCs, vendors for mobile platform AV must be able to demonstrate accurate detection and fast updates. If something is discovered, anti-malware systems should warn IT. Most MDM systems will allow you to quarantine an infected device until it's remediated.

Grant Moerschel is co-founder of WaveGard, a consulting firm. Write to us at iwletters@techweb.com.

Comment  | 
Print  | 
More Insights
Register for Dark Reading Newsletters
White Papers
Flash Poll
Current Issue
Cartoon
Video
Slideshows
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2014-0640
Published: 2014-08-20
EMC RSA Archer GRC Platform 5.x before 5.5 SP1 allows remote authenticated users to bypass intended restrictions on resource access via unspecified vectors.

CVE-2014-0641
Published: 2014-08-20
Cross-site request forgery (CSRF) vulnerability in EMC RSA Archer GRC Platform 5.x before 5.5 SP1 allows remote attackers to hijack the authentication of arbitrary users.

CVE-2014-2505
Published: 2014-08-20
EMC RSA Archer GRC Platform 5.x before 5.5 SP1 allows remote attackers to trigger the download of arbitrary code, and consequently change the product's functionality, via unspecified vectors.

CVE-2014-2511
Published: 2014-08-20
Multiple cross-site scripting (XSS) vulnerabilities in EMC Documentum WebTop before 6.7 SP1 P28 and 6.7 SP2 before P14 allow remote attackers to inject arbitrary web script or HTML via the (1) startat or (2) entryId parameter.

CVE-2014-2515
Published: 2014-08-20
EMC Documentum D2 3.1 before P24, 3.1SP1 before P02, 4.0 before P11, 4.1 before P16, and 4.2 before P05 does not properly restrict tickets provided by D2GetAdminTicketMethod and D2RefreshCacheMethod, which allows remote authenticated users to gain privileges via a request for a superuser ticket.

Best of the Web
Dark Reading Radio
Archived Dark Reading Radio
Three interviews on critical embedded systems and security, recorded at Black Hat 2014 in Las Vegas.