Feeds

Lookout for Internet Explorer bugs

A bad week in the office for MS security

  • alert
  • submit to reddit

Top 5 reasons to deploy VMware with Tegile

It's been a bad week for Internet Explorer users as the second potential devastating vulnerability in as many days has been discovered by security researchers.

Flaws in the way IE renders binary attachments in HTML email could be used to trick users into running malicious code on their machines, Microsoft has admitted.

The problem, which affects IE 5.5 and 5.01, stems from the way the browser processes certain unusual MIME types, which it handles incorrectly.

If an attacker created a HTML email containing an executable attachment, then modified the MIME header to indicate a type that IE handles incorrectly then the attachment would be launched automatically.

The vulnerability, which was discovered by Juan Carlos Cuartango, could be exploited through either coaxing a victim into browsing a maliciously-constructed Web site or via the opening of an infected HTML email.

In a security notice on the subject, Microsoft admitted: "This vulnerability could enable an attacker to potentially run a program of her choice on the machine of another user. Such a program would be capable of taking any action that the user himself could take on his machine, including adding, changing or deleting data, communicating with web sites, or reformatting the hard drive."

Microsoft has issued a patch to address the problem, which is available here.

Earlier this week another potentially nasty IE flaw was suggested by veteran bug hunter Georgi Guninski.

In an advisory, Guninski said that the way Microsoft's Internet Explorer (IE), Internet Information Server (IIS) and Exchange 2000 work together can be exploited to obtain access to either server directories or email.

The issue is quite complex and concerns the way the scripting interface for accessing and manipulating object on IIS 5.0 or web storage (a feature of Exchange 2000) works.

Microsoft are looking into the issue and are reportedly not pleased with Guninski's early disclosure of a possible bug. In an email to Guninski, the software giant suggested any possible flaw could be effectively guarded against by using the trusted zones feature in its software.

Richard Stagg, a security consultant at Information Risk Management, said Guninski appeared to have hit on a live issue but he added that the more important factor was whether a packaged exploit would emerge, and that remained unknown. ®

Related Stories

MS gets hacked off with bug hunter
Warning issued over Windows Media Player 7 bug

Security for virtualized datacentres

More from The Register

next story
'Kim Kardashian snaps naked selfies with a BLACKBERRY'. *Twitterati gasps*
More alleged private, nude celeb pics appear online
Home Depot ignored staff warnings of security fail laundry list
'Just use cash', former security staffer warns friends
Hackers pop Brazil newspaper to root home routers
Step One: try default passwords. Step Two: Repeat Step One until success
UK.gov lobs another fistful of change at SME infosec nightmares
Senior Lib Dem in 'trying to be relevant' shocker. It's only taxpayers' money, after all
Who.is does the Harlem Shake
Blame it on LOLing XSS terroristas
Snowden, Dotcom, throw bombs into NZ election campaign
Claim of tapped undersea cable refuted by Kiwi PM as Kim claims extradition plot
Freenode IRC users told to change passwords after securo-breach
Miscreants probably got in, you guys know the drill by now
THREE QUARTERS of Android mobes open to web page spy bug
Metasploit module gobbles KitKat SOP slop
BitTorrent's peer-to-peer chat app Bleep goes live as public alpha
A good day for privacy as invisble.im also reveals its approach to untraceable chats
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.
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.
Saudi Petroleum chooses Tegile storage solution
A storage solution that addresses company growth and performance for business-critical applications of caseware archive and search along with other key operational systems.
WIN a very cool portable ZX Spectrum
Win a one-off portable Spectrum built by legendary hardware hacker Ben Heck
The next step in data security
With recent increased privacy concerns and computers becoming more powerful, the chance of hackers being able to crack smaller-sized RSA keys increases.