Feeds

Twitter plugs black-box website vuln

Mouse hole

Choosing a cloud hosting partner with confidence

Twitter's security team said it has fixed a serious vulnerability on the site that created micro-blogging mayhem on Tuesday.

The cross-site scripting flaw on the Twitter.com site creates a means for posting code into updates that activated when users rolled their mouse over a link. Moving a mouse over redacted (blacked out) tweets was especially dangerous.

Thousands of people were caught out by the vulnerability, including the former prime minister's wife, Sarah Brown. The bug was largely used for mischief but there were reports of porn and shock site redirects, along with profile corruption and various other unpleasant side effects.

Security watchers warned the flaw might easily be harnessed in phishing attacks so it's just as well Twitter's security team in California roused themselves from sleep to plug the flaw, around two hours after it first appeared.

Del Harvey, head of Twitter's trust and safety team, said.

The XSS attack should now be fully patched and no longer exploitable. Thanks, those reporting it.

Users were able to shield themselves from affected tweets in TweetDeck by filtering out Tweets bearing the phrase "onmouseover=". A video of the effects of the vulnerability, and the worm it spawned, can be found from F-Secure here. ®

Internet Security Threat Report 2014

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?
Russian hackers exploit 'Sandworm' bug 'to spy on NATO, EU PCs'
Fix imminent from Microsoft for Vista, Server 2008, other stuff
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
Apple grapple: Congress kills FBI's Cupertino crypto kybosh plan
Encryption would lead us all into a 'dark place', claim G-Men
'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

Forging a new future with identity relationship management
Learn about ForgeRock's next generation IRM platform and how it is designed to empower CEOS's and enterprises to engage with consumers.
Why and how to choose the right cloud vendor
The benefits of cloud-based storage in your processes. Eliminate onsite, disk-based backup and archiving in favor of cloud-based data protection.
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.
Reg Reader Research: SaaS based Email and Office Productivity Tools
Read this Reg reader report which provides advice and guidance for SMBs towards the use of SaaS based email and Office productivity tools.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.