Feeds

Snapchat bug lets hackers aim DENIAL of SERVICE attacks at YOUR MOBE

Researcher allegedly blocked after he went public

Top 5 reasons to deploy VMware with Tegile

A security consultant who works for Telefonica has turned up a bug in how Snapchat handles authentication tokens, which enables a denial-of-service attack against users' phones.

It's a simple enough problem, as Jaime Sánchez explains here: the tokens should expire, but don't. As a result, one token can be re-used on many machines, and with a little scripting, all those machines can be instructed to send pics.

“That could let an attacker send spam to the 4.6 million leaked account list in less then one hour”, Sánchez writes. Or, in a DoS scenario, the machines could be instructed to hose a single user.

If the DoS is aimed at an iPhone, he says, it will freeze; Android phones don't seem to lock up completely, but “it does slow their speed. It also makes it impossible to use the app until the attack has finished.”

Below is a YouTube video of the attack, demonstrated against an LA Times reporter's smartphone.

Youtube Video

Sánchez claims that rather than fixing the problem or contacting him, Snapchat has blocked the accounts he used to test the vulnerability. ®

Security for virtualized datacentres

More from The Register

next story
'Kim Kardashian snaps naked selfies with a BLACKBERRY'. *Twitterati gasps*
More alleged private, nude celeb pics appear online
Home Depot ignored staff warnings of security fail laundry list
'Just use cash', former security staffer warns friends
Hackers pop Brazil newspaper to root home routers
Step One: try default passwords. Step Two: Repeat Step One until success
UK.gov lobs another fistful of change at SME infosec nightmares
Senior Lib Dem in 'trying to be relevant' shocker. It's only taxpayers' money, after all
Who.is does the Harlem Shake
Blame it on LOLing XSS terroristas
Snowden, Dotcom, throw bombs into NZ election campaign
Claim of tapped undersea cable refuted by Kiwi PM as Kim claims extradition plot
Freenode IRC users told to change passwords after securo-breach
Miscreants probably got in, you guys know the drill by now
THREE QUARTERS of Android mobes open to web page spy bug
Metasploit module gobbles KitKat SOP slop
BitTorrent's peer-to-peer chat app Bleep goes live as public alpha
A good day for privacy as invisble.im also reveals its approach to untraceable chats
prev story

Whitepapers

Providing a secure and efficient Helpdesk
A single remote control platform for user support is be key to providing an efficient helpdesk. Retain full control over the way in which screen and keystroke data is transmitted.
A strategic approach to identity relationship management
ForgeRock commissioned Forrester to evaluate companies’ IAM practices and requirements when it comes to customer-facing scenarios versus employee-facing ones.
Saudi Petroleum chooses Tegile storage solution
A storage solution that addresses company growth and performance for business-critical applications of caseware archive and search along with other key operational systems.
WIN a very cool portable ZX Spectrum
Win a one-off portable Spectrum built by legendary hardware hacker Ben Heck
The next step in data security
With recent increased privacy concerns and computers becoming more powerful, the chance of hackers being able to crack smaller-sized RSA keys increases.