Feeds

Information disclosure bug blights IE7 release

Plus ça change

The Power of One eBook: Top reasons to choose HP BladeSystem

Security researchers have already discovered an information disclosure vulnerability in IE7 hours after the release (story here) of Microsoft's long-awaited browser software upgrade.

The flaw stems from error in the handling of redirections for URLs with the "mhtml:" URI handler. Security notification firm Secunia reports that the same bug was discovered six months ago in IE6 but remains unresolved. In any case, the flaw has managed to find its way into the code-base of IE7.

The vulnerability - rated as "less critical" by Secunia, the first to warn of the problem - might be used to access documents served from another web site. So the security bug lends itself to possible misuse in various scam and phishing attacks, Thomas Kristensen, CTO of security notification firm Secunia, told El Reg.

Secunia has produced up a test, featuring proof-of-concept code, in order to illustrate the problem

Since IE7 has just been released, and therefore has a negligible user base, real-life exploitation is somewhat unlikely, at least for now, and the IE6 version of the exploit hasn't been used much in anger, to the best of our knowledge at least. But discovery of the flaw suggests that IE7, just like IE6 and previous versions of Microsoft's browser software, will require regular patching despite much-touted (and not inconsequential) security improvements.

Some security bugs in IE7 were discovered during the development process while others are (doubtless) awaiting discovery. In February, security researcher Tom Ferris discovered a means to crash preview (beta 2) versions of IE7. Microsoft promised to fix the problem. ®

Designing a Defense for Mobile Applications

More from The Register

next story
Secure microkernel that uses maths to be 'bug free' goes open source
Hacker-repelling, drone-protecting code will soon be yours to tweak as you see fit
How long is too long to wait for a security fix?
Synology finally patches OpenSSL bugs in Trevor's NAS
Roll out the welcome mat to hackers and crackers
Security chap pens guide to bug bounty programs that won't fail like Yahoo!'s
HIDDEN packet sniffer spy tech in MILLIONS of iPhones, iPads – expert
Don't panic though – Apple's backdoor is not wide open to all, guru tells us
Researcher sat on critical IE bugs for THREE YEARS
VUPEN waited for Pwn2Own cash while IE's sandbox leaked
Four fake Google haxbots hit YOUR WEBSITE every day
Goog the perfect ruse to slip into SEO orfice
Putin: Crack Tor for me and I'll make you a MILLIONAIRE
Russian Interior Ministry offers big pile o' roubles for busting pro-privacy browser
prev story

Whitepapers

Designing a Defense for Mobile Applications
Learn about the various considerations for defending mobile applications - from the application architecture itself to the myriad testing technologies.
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.
Top 8 considerations to enable and simplify mobility
In this whitepaper learn how to successfully add mobile capabilities simply and cost effectively.
Seven Steps to Software Security
Seven practical steps you can begin to take today to secure your applications and prevent the damages a successful cyber-attack can cause.
Boost IT visibility and business value
How building a great service catalog relieves pressure points and demonstrates the value of IT service management.