Bug allowed free access to Sirius radio service

IDG News Service - Sirius XM Radio has quietly fixed a bug in its satellite radio system that since 2002 had provided a way for former subscribers to gain free access to the Sirius service, according to security vendor TippingPoint Technologies.

TippingPoint found out about the issue when it was reported to the company's Zero Day Initiative, which pays hackers for technical details on security bugs, said Terri Forslof, TippingPoint's manager of security response. The company relayed its information on the issue to Sirius on July 10, she added.

The situation shines a light on what could become a new problem for the radio network after the July merger of Sirius and XM Satellite Radio: satellite piracy. Industry watchers say that with a combined audience of more than 18.5 million Sirius XM subscribers, pirates may now have the incentive they need to create illegal devices that can receive Sirius XM signals.

The July 10 problem, which Sirius has apparently now resolved, according to TippingPoint, involved the deactivation process used to cancel subscriptions. "It's really an oversight on Sirius' side," Forslof said. "It's just kind of sloppy, and in the end it really hurts their bottom line."

For example, the flaw could have been exploited to build black-market satellite radio receivers that would never be deactivated, Forslof said. Although TippingPoint doesn't know how many people may have been aware of the issue, the person who reported the bug to TippingPoint said that "multiple people were doing this," according to Forslof.

TippingPoint, a division of 3Com Corp., described the severity of the issue as "medium" on its Web site, but the flaw doesn't affect the security of Sirius users, Forslof said. Also, it doesn't affect devices designed to use XM Satellite Radio.

Sirius XM had little to say about TippingPoint's findings. "Sirius XM does not comment on security issues though we do invest in our technologies to insure our service is protected for our subscribers," the company said in an e-mailed statement. "We are confident in the effectiveness of our technology."

It isn't clear exactly when Sirius fixed the bug or for how long it was possible to exploit it. Sirius first began offering service under that name in 2002, and the bug apparently existed then, according to TippingPoint.

A search of online forums turned up anecdotal evidence that some Sirius subscribers may have been able to evade the company's deactivation signals, as well as at least one reference to a cracked Sirius Sportster radio, selling for $400.

Whether that $400 Sportster works is doubtful, said Jim Shelton, an independent consultant who finds and tests illegal satellite equipment. He said he hasn't seen Sirius or XM devices for sale recently from the sources he uses for his investigations. "If there was something legitimate out there, I would have come across it by now," he said.