Researchers at the University of London are going public with a paper that claims to have found a flaw in the specification for Transport Layer Security (TLS) that could leave supposedly secure Web, IM, VoIP and other online sessions exposed to prying eyes. The researchers, Nadhem Al Fardan and Kenny Patterson of the Information Security Group at Royal Holloway, University of London said that the security hole stem from a flaw in the TLS specification, rather than a bug in how TLS is implemented. The two researchers have developed proof of concept attacks that take advantage of the flaw, and that could be used to recover a complete block of TLS-encrypted plaintext, the researchers said. Al Fardan is a Ph.D student in the Information Security Group. Patterson is a professor of Information Security there. The two have discovered other, serious holes in TLS before. Notably: the two discovered a critical […]
Tag: Web
Weekend Security Reads – Our Picks
This was another eventful news week in the security world – stories about hacks on two, prominent newspapers, and a widespread hole in UPnP, a technology that all of us use, but never pay much attention to. (Always a dangerous combination.) Let’s face it, Friday is a time for decamping from the office, not taking on some weighty new mental project or thought provoking issue. But, come Sunday morning over coffee, you might just be ready to switch your higher cognitive functions on again. If so, here are some Security Ledger picks for good weekend reads: Hacking the Old Gray Lady – Slate.com The top security story this week was the string of revelations about sophisticated, targeted attacks against leading U.S. newspapers, including The New York Times and The Wall Street Journal. The Washington Post may also have been infiltrated, according to a report on Krebsonsecurity.com. The attacks by so-called […]
Update: Student’s Expulsion Exposes Computer Science Culture Gap
Editor’s Note: Updated to include comment from Dawson CS Professor Simonelis. – PFR 1/22/2013 The expulsion of a 20 year-old computer science major at Dawson College in Quebec, Canada has laid bare what one expert says is a culture gap between academic computer science departments and the ‘real world’ of application development. In the wake of news stories that have drawn attention to the case, Dawson’s faculty and administration have stood by their decision, saying that “hacking” of the type Ahmed Al-Khabaz was engaged in was an example of “unprofessional conduct” by a computer sciences engineer. This, even as private sector firms – including the company whose software Al-Khabaz exposed – have come forward with job offers and scholarships. Al-Khabaz was expelled in November by a school administration that looked askance at his security audits of a student portal web site dubbed “Omnivox,” accusing him of launching “SQL injection” attacks […]
Update: Canadian Colleges Go Dark Following Expulsion of Whitehat
Editor’s Note: Updated to clarify that the sites were unreachable outside Canada, but accessible from IP addresses within that country and to add comment from Skytech on the Internet filtering. – PFR (1/22/2013) The web sites of a number of Canadian General and Vocational Colleges were unreachable from IP addresses outside Canada on Tuesday, after news spread that Dawson College, in Montreal, expelled a student who uncovered and reported security holes in a web-based student portal used at the school. The web site for Dawson College, dawsoncollege.qc.ca returned a 403 “Access Denied” message on Monday evening and Tuesday morning, along with the web sites for John Abbott College, the Collège de Maisonneuve and Cégep de Trois-Rivières. The schools all use the Omnivox software by local firm Skytech Communications to manage their student portals. The web site for Skytech Communications could not be reached either early Tuesday and returned the same 403 error. Calls […]
Student Exposes Gaping Hole In Software, Gets Expelled
The days of chasing down white-hat security researchers with packs of lawyers like they were criminals is long behind us – or is it? A new story out of Canada suggests that “killing the messenger” is still the preferred response of some organizations when presented with inconvenient truths about shoddy and insecure software. According to a story in Sunday’s National Post, a 20 year-old student at Dawson College has been expelled after he discovered and responsibly disclosed a gaping security hole in a management platform used by Dawson and many of Quebec’s General and Vocational Colleges” (or CEGEPs), which server around 250,000 students. Ahmed Al-Khabaz, a student in Dawson’s Computer Science program discovered the flaw while designing a mobile application to give students easier access to the campus’s Omnivox program, which is used to manage a wide range of student services. In an interview with National Post, Al-Khabaz said that […]
