Feeds

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

Researcher allegedly blocked after he went public

Security for virtualized datacentres

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. ®

Beginner's guide to SSL certificates

More from The Register

next story
FYI: OS X Yosemite's Spotlight tells Apple EVERYTHING you're looking for
It's on by default – didn't you read the small print?
Edward who? GCHQ boss dodges Snowden topic during last speech
UK spies would rather 'walk' than do 'mass surveillance'
Microsoft pulls another dodgy patch
Redmond makes a hash of hashing add-on
NOT OK GOOGLE: Android images can conceal code
It's been fixed, but hordes won't have applied the upgrade
DEATH by PowerPoint: Microsoft warns of 0-day attack hidden in slides
Might put out patch in update, might chuck it out sooner
'LulzSec leader Aush0k' found to be naughty boy not worthy of jail
15 months home detention leaves egg on feds' faces as they grab for more power
prev story

Whitepapers

Cloud and hybrid-cloud data protection for VMware
Learn how quick and easy it is to configure backups and perform restores for VMware environments.
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.
High Performance for All
While HPC is not new, it has traditionally been seen as a specialist area – is it now geared up to meet more mainstream requirements?
Three 1TB solid state scorchers up for grabs
Big SSDs can be expensive but think big and think free because you could be the lucky winner of one of three 1TB Samsung SSD 840 EVO drives that we’re giving away worth over £300 apiece.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.