Election hacked, drunken robot elected to school board - Register

RSA 2012 Security experts have warned that electronic voting systems are decades away from being secure, and to prove it a team from the University of Michigan successfully got the foul-mouthed, drunken Futurama robot Bender elected to head of a school board.

In 2010 the Washington DC election board announced it had set up an e-voting system for absentee ballots and was planning to use it in an election. However, to test the system, it invited the security community and members of the public to try and hack it three weeks before the election.

"It was too good an opportunity to pass up," explained Professor Alex Halderman from the University of Michigan. "How often do you get the chance to hack a government network without the possibility of going to jail?"

With the help of two graduate students, Halderman started to examine the software. Despite it being a relatively clean Ruby on Rails build, they spotted a shell injection vulnerability within a few hours. They figured out a way of writing output to the images directory on the compromised server, and of encrypting traffic so that the front-end intrusion detection system couldn't spot them. The team also managed to guess the login details for the terminal server used by the voting system. This wasn't exactly difficult, since the user name and password were both "admin".

Once in, the team searched the government servers for additional vulnerabilities and system options. They found that the cameras installed to watch the voting systems weren't protected, and used them to work out when staff left for the day and so wouldn't spot server activity. More worrying, they also found a PDF file containing the authentication codes for every Washington DC voter in the forthcoming election.

The team altered all the ballots on the system to vote for none of the nominated candidates. They then wrote in names of fictional IT systems as candidates, including Skynet and (Halderman's personal favorite) Bender for head of the DC school board. They also set up systems so that any further ballots would come under their control.

According to the log files the team found, plenty of people were also busy trying to get into the system. They spotted attempts to get in from the Persian University, as well as India and China. Using their inside access, they blocked these attacks. Finally, they inserted the word "owned" onto the final signoff screen of the voting page, and set up the University of Michigan football fight song to play after 15 seconds.

It took two days before the authorities discovered they'd been pwned, and they were only alerted to that fact when another tester told them the system was secure, but that they should lose the music on the sign-off screen, as it was rather annoying. Halderman has now published a full account of the attack.

The attack demonstrates several of the flaws in electronic voting systems, and at numerous sessions at the RSA 2012 conference in San Francisco, experts have consistently warned against the dangers of this technology. In the US, there are 33 states that have introduced some kind of electronic voting systems – and none of them are secure enough to resist a determined attacker said Dr. David Jefferson from Lawrence Livermore National Labs.

"The states are in the habit of certifying voting systems, typically without testing them or seeing the source code," he said. "In many cases the voting system uses proprietary code that government can't legally check, and the running of the systems is outsourced to the vendors. This situation is getting worse."

E-voting was a national security issue, he said. Financial attacks by hackers are relatively easy to detect – because at some point money has to leave the system. But if an election is hacked then we may never know, because it's a one-time action that typically isn't checked after the results have been announced and officials elected.

It will be decades before we have the technology to vote securely, Jefferson said, if indeed it is even possible. At stake is democracy itself, but politicians don't seem to understand the problems of electronic voting, and both Jefferson and Halderman expressed fears for the future if current systems become more popular. ®

View the original article here

Skype lets hackers track your BitTorrent downloads - Register

Scientists have devised a stealthy and low-cost way to track the internet protocol addresses of tens of thousands of Skype users, and link the information to their online activities such as the sharing of specific files over BitTorrent.

The method, which is laid out in a recently published academic paper, works even when Skype users have configured their accounts to accept calls only from people in their contact lists. It also works against Skype users who aren't currently logged in, as long as they've used the VoIP program in the past three days. The system is able to link an individual Skype user to specific BitTorrent activity, even when they share the IP address with others over a local area network that uses NAT, or network address translation.

“We have shown that it is possible for an attacker, with modest resources, to determine the current IP address of identified and targeted Skype user[s] (if the user is currently active),” the 14-page paper stated. “In the case of Skype, even if the targeted user is behind a NAT, the attacker can determine the user's public IP address. Such an attack could be used for many malicious purposes, including observing a person's mobility or linking the identity of a person to his internet usage.”

The scientists found that it was relatively easy to find the ID of most Skype users when their email address and birth name are known to the attacker. Additional information, such as the target's city of residence, sex, or age, brought greater accuracy to the task.

They then called the target's Skype account using a customized system that sent specially crafted packets. By examining the headers of the data that was returned, they had no trouble determining the person's IP address. Because the scientists prevented a TCP, or transmission control protocol, connection from being fully established during the probing, targets had no idea their Skype accounts were being tracked. The scientists devised the system so that it could track 10,000 people for about $500 per week.

After learning the IP addresses of individuals, the scientists tapped BitTorrent sites to track the specific downloads of addresses in their database. Even when one of the IP addresses was shared among many users on a single network, the method was able to single link a unique Skype user to a specific download by, among other things, collecting identifiers known as infohashes from BitTorrent networks.

The scientists said Google Talk, MSN Live and other real-time communication applications may also be susceptible to the technique, but they singled Skype out for containing what they called “a major privacy vulnerability.”

In a statement, Adrian Asher, chief information security officer in Microsoft's Skype division, said: “We value the privacy of our users and are committed to making our products as secure as possible. Just as with typical internet communications software, Skype users who are connected may be able to determine each other's IP address. Through research and development, we will continue to make advances in this area and improvements to our software.”

The research paper, which is titled I Know Where You are and What You are Sharing, made several recommendations for improving Skype's ability to conceal the identity of its users.

“One solution that would go a long way is to design the VoIP system so that the callee's IP address is not revealed until the user accepts the call,” it stated. “With this property, Alice would not be able to inconspicuously call Bob. Moreover, if Alice is a stranger (that is, not on Bob's contact list), and Bob configures his client to not accept calls from strangers, then this design would prevent any stranger from tracking him, conspicuously or otherwise.”

A PDF of the paper is here. ®

View the original article here