Vulnerabilities / Threats
10/23/2009
05:04 PM
Connect Directly
Google+
Twitter
RSS
E-Mail
50%
50%

Gift Cards Convenient And Easy To Hack

Researchers reveal hacks for prepaid gift cards

It's not just credit cards and debit cards that are at risk of fraud: pre-paid gift cards can also easily be cloned and stolen by cybercriminals, according to newly published research.

Researchers at UK-based Corsaire say the magnetic-stripe technology used for gift cards and customer loyalty cards -- as well as their easy accessibility -- make them attractive targets for the bad guys. Gift cards can easily be "sniffed" off the shelf in the checkout line with a scanner and then cloned; the card number on the back of the card stolen; and the retailers' Web-based gift card applications hacked.

"Gift cards are a type of currency and thus, they're likely to be targeted by fraudsters in the future, says Adrian Pastor, principal security consultant with Corsaire, which first revealed some of its gift card hack research at EUSecWest in May, "It looks like standardized security guidelines are needed for the gift card industry. We're hoping that our paper will serve as a good first step in accomplishing this."

Even unactivated gift cards are at risk: Corsaire says all a fraudster has to do is take one from a display in a retail store, scan it with the proper scanning device to clone it, and then use the card once an unsuspecting customer buys it and it's activated. "Although gift cards need to be at a visible location in stores to attract customers, they should not be at a location easily available for anyone to reach. Doing so would help stop attackers from cloning them and putting them back on the stand," Pastor says. "By doing this, all the attacker needs to do is wait for a customer to activate the gift card and load it with credit. Because the magstripe track data on these gift cards is the same before and after being activated, the attacker could now purchase goods for 'free.'"

Some gift cards display their card number on the back, which can provide a fraudster with enough information to clone a card, or even to redeem the gift card at the retailer, for instance. This way, they don't even have to swipe the magnetic stripe. And sometimes the gift card numbers are printed on sales receipts, the researchers noted. "Some gift card balance lookup sites only require users to enter their gift card number, whereas others also require PIN in addition to the card number," Pastor notes.

And like any Web application, a gift-card application has its vulnerabilities -- including the pervasive SQL injection flaw. "We also introduced some attacks which although we haven't tested, could work against certain implementations. For instance, manipulating a card's balanced in the back-end database by crafting magstripe data with malicious SQL statements," Pastor says.

An attacker could modify the gift card balance this way, for example. But this would require knowledge of the retailer's internal systems, so it would be difficult to execute.

A more realistic hack would be the gift-card programs administrative console, according to the researchers. That way, the attacker could set the balance of the card, for example.

Corsaire's Pastor says he was surprised how it's possible to attack at least two UK retail chains by brute-forcing gift-card numbers against the balance look-up site. "[You then] record card numbers that have been activated and their corresponding balance. Because in the two particular card implementations the track data can be fully derived from the card number, you can essentially clone an active card without ever having physical access to it," he says.

Pastor says gift cards should be secured like any other type of currency and electronic payment transaction.

Corsaire's research paper is available for download here.

Have a comment on this story? Please click "Discuss" below. If you'd like to contact Dark Reading's editors directly, send us a message.

Kelly Jackson Higgins is Executive Editor at DarkReading.com. She is an award-winning veteran technology and business journalist with more than two decades of experience in reporting and editing for various publications, including Network Computing, Secure Enterprise ... View Full Bio

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-2013-7407
Published: 2014-10-22
Cross-site request forgery (CSRF) vulnerability in the MRBS module for Drupal allows remote attackers to hijack the authentication of unspecified victims via unknown vectors.

CVE-2014-3675
Published: 2014-10-22
Shim allows remote attackers to cause a denial of service (out-of-bounds read) via a crafted DHCPv6 packet.

CVE-2014-3676
Published: 2014-10-22
Heap-based buffer overflow in Shim allows remote attackers to execute arbitrary code via a crafted IPv6 address, related to the "tftp:// DHCPv6 boot option."

CVE-2014-3677
Published: 2014-10-22
Unspecified vulnerability in Shim might allow attackers to execute arbitrary code via a crafted MOK list, which triggers memory corruption.

CVE-2014-3828
Published: 2014-10-22
Multiple SQL injection vulnerabilities in Centreon 2.5.1 and Centreon Enterprise Server 2.2 allow remote attackers to execute arbitrary SQL commands via (1) the index_id parameter to views/graphs/common/makeXML_ListMetrics.php, (2) the sid parameter to views/graphs/GetXmlTree.php, (3) the session_id...

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.