Feeds

Yahoo! battered by second ActiveX vulnerability

Upgrade averts code catastrophe

Beginner's guide to SSL certificates

Yahoo! users are urged to upgrade their instant messaging software following the discovery of a brace of security vulnerabilities - the second set of serious security flaws involving Yahoo! Messenger in as many weeks.

The latest security bugs both stem from stack-based buffer overflow flaws in the YVerInfo.dll ActiveX control. Successful exploitation, which is far from straightforward, creates a means for hackers to inject hostile code onto systems running vulnerable versions of Yahoo! Messenger.

In order to exploit the bugs, hackers would need to establish a malicious web page in the yahoo.com domain, which might be done by methods such as a cross-site scripting vulnerability or by manipulating DNS resolution, security notification firm Secunia reports.

The vulnerabilities affect versions of Yahoo! Messenger 8.x prior to version 8.1.0.419, released late last week. Users are urged to upgrade.

More background can be found in security advisories from Yahoo! (here) and iDefense (here), the firm that discovered the bug.

Last month security researchers identified an even more serious bug - again involving a dodgy ActiveX control - that meant users were exposed to attack providing they accepted a webcam invite from a hacker. ®

Choosing a cloud hosting partner with confidence

More from The Register

next story
SMASH the Bash bug! Apple and Red Hat scramble for patch batches
'Applying multiple security updates is extremely difficult'
Apple's new iPhone 6 vulnerable to last year's TouchID fingerprint hack
But unsophisticated thieves need not attempt this trick
Hackers thrash Bash Shellshock bug: World races to cover hole
Update your gear now to avoid early attacks hitting the web
Oracle SHELLSHOCKER - data titan lists unpatchables
Database kingpin lists 32 products that can't be patched (yet) as GNU fixes second vuln
Who.is does the Harlem Shake
Blame it on LOLing XSS terroristas
Researchers tell black hats: 'YOU'RE SOOO PREDICTABLE'
Want to register that domain? We're way ahead of you.
Stunned by Shellshock Bash bug? Patch all you can – or be punished
UK data watchdog rolls up its sleeves, polishes truncheon
Ello? ello? ello?: Facebook challenger in DDoS KNOCKOUT
Gets back up again after half an hour though
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.
Intelligent flash storage arrays
Tegile Intelligent Storage Arrays with IntelliFlash helps IT boost storage utilization and effciency while delivering unmatched storage savings and performance.
Beginner's guide to SSL certificates
De-mystify the technology involved and give you the information you need to make the best decision when considering your online security options.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.
Secure remote control for conventional and virtual desktops
Balancing user privacy and privileged access, in accordance with compliance frameworks and legislation. Evaluating any potential remote control choice.