Feeds

Yahoo! 0-day! exploit! hijacks! status! updates!

Right now I'm: spamming my contacts with malware links

5 things you didn’t know about cloud backup

Security researchers have discovered an unpatched flaw in Yahoo! Messenger that allows miscreants to change any user's status message.

Hijacked status updates are a handy way to persuade a victim's contacts to click on a link and lead them to a dangerous website. Worse still, the bug in version 11.x of the Messenger client requires minimal user interaction to work, unlike previous exploits that relied on conning prospective marks.

The attacker sends a supposed file to a target that is actually an iframe that swaps the status message for the attacker's customised text, as explained in a blog post by net security firm BitDefender here. The message might be, and in most attack scenarios would be, sent firm outside a targeted user's contact list.

If successfully executed, a victim will have no indication that his or her status message has been rewritten. The ruse might be used to gain affiliate incomes by promoting dodgy sites as well as directing users towards sites loaded with exploits or scareware scams.

Bitdefender said it has notified Yahoo about the vulnerability. Attacks based on the as yet unfixed flaw have already been detected in the wild, the Romanian security firm warns.

It advises users to change the setting of their IM client to “ignore anyone who is not in your Yahoo! Contacts" (which is off by default) as a precaution pending the release of a patch. In addition, some security suites include a web filter function that ought to defend users from this attack. ®

Secure remote control for conventional and virtual desktops

More from The Register

next story
Ice cream headache as black hat hacks sack Dairy Queen
I scream, you scream, we all scream 'DATA BREACH'!
Goog says patch⁵⁰ your Chrome
64-bit browser loads cat vids FIFTEEN PERCENT faster!
NIST to sysadmins: clean up your SSH mess
Too many keys, too badly managed
Scratched PC-dispatch patch patched, hatched in batch rematch
Windows security update fixed after triggering blue screens (and screams) of death
Researchers camouflage haxxor traps with fake application traffic
Honeypots sweetened to resemble actual workloads, complete with 'secure' logins
Attack flogged through shiny-clicky social media buttons
66,000 users popped by malicious Flash fudging add-on
New Snowden leak: How NSA shared 850-billion-plus metadata records
'Federated search' spaffed info all over Five Eyes chums
Three quarters of South Korea popped in online gaming raids
Records used to plunder game items, sold off to low lifes
Oz fed police in PDF redaction SNAFU
Give us your metadata, we'll publish your data
prev story

Whitepapers

Endpoint data privacy in the cloud is easier than you think
Innovations in encryption and storage resolve issues of data privacy and key requirements for companies to look for in a solution.
Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Advanced data protection for your virtualized environments
Find a natural fit for optimizing protection for the often resource-constrained data protection process found in virtual environments.
Boost IT visibility and business value
How building a great service catalog relieves pressure points and demonstrates the value of IT service management.
Next gen security for virtualised datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.