Microsoft squashes Hotmail hijack bug

Powered by SC Magazine
 

Accounts cracked in 60 seconds.

Microsoft has crushed a vulnerability in Hotmail that allowed attackers to hijack accounts using a Firefox extension.

The bug was actively exploited on cybercrime forums last month by users who boasted the ability to crack any Hotmail account in less than a minute.

Some charged around $20 for the service, security researcher Naveen Thakur said.

The attack was simplified through the Tamper Data Firefox extension, which helped hijackers exploit a weakness in the way Hotmail issued password resets. The exploit allowed attackers to bypass the recovery feature and issue a password of their choosing.

Researchers at Vulnerability Lab said the token system designed to secure the reset procedure "only checks if a value is empty then blocks or closes the web session".

"Successful exploitation results in unauthorised MSN or Hotmail account access."

Attackers could use positive values in the token system to bypass the security feature, decode the CAPTCHA anti-spam feature and send automated values to the MSN Live Hotmail module.

Vulnerability Labs discovered the flaw and reported it to Microsoft about ten days later.

Redmond's security team took only a day to fix the flaw.

Copyright © SC Magazine, Australia


Microsoft squashes Hotmail hijack bug
 
 
 
Top Stories
Meet FABACUS, Westpac's first computer
GE225 operators celebrate gold anniversary.
 
NSW Govt gets ready to throw out the floppy disks
[Opinion] Dominic Perrottet says its time for government to catch up.
 
iiNet facing new copyright battle with Hollywood
Fighting to protect customer details.
 
 
Sign up to receive iTnews email bulletins
   FOLLOW US...
Latest articles on BIT Latest Articles from BIT
Do you direct debit customers? Read this
Oct 10, 2014
Authorities have been targeting direct debit practices with iiNet and Dodo receiving formal ...
Optus expands 4G coverage
Oct 10, 2014
If you rely on an Optus phone for work you might be interested to know that there are now 200 ...
Microsoft Office is now free for some charities
Oct 10, 2014
Microsoft has announced that eligible Australian non-profit organisations and charities can now ...
Vodafone lights up 4G in Adelaide
Oct 9, 2014
Live and work in Adelaide? Vodafone has switched on its 4G network in the city and suburbs.
Next year tradies will be able to take payments using ingogo
Oct 3, 2014
Ingogo is going to provide a card payment service for Xero users.
Latest Comments
Polls
In which area is your IT shop hiring the most staff?




   |   View results
IT security and risk
  26%
 
Sourcing and strategy
  12%
 
IT infrastructure (servers, storage, networking)
  21%
 
End user computing (desktops, mobiles, apps)
  15%
 
Software development
  26%
TOTAL VOTES: 340

Vote
Would your InfoSec team be prepared to share threat data with the Australian Government?

   |   View results
Yes
  58%
 
No
  42%
TOTAL VOTES: 143

Vote