Feeds

Information disclosure bug blights IE7 release

Plus ça change

Website security in corporate America

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. ®

Protecting users from Firesheep and other Sidejacking attacks with SSL

More from The Register

next story
Early result from Scots indyref vote? NAW, Jimmy - it's a SCAM
Anyone claiming to know before tomorrow is telling porkies
Home Depot: 56 million bank cards pwned by malware in our tills
That's about 50 per cent bigger than the Target tills mega-hack
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
Critical Adobe Reader and Acrobat patches FINALLY make it out
Eight vulns healed, including XSS and DoS paths
Spies would need SUPER POWERS to tap undersea cables
Why mess with armoured 10kV cables when land-based, and legal, snoop tools are easier?
TOR users become FBI's No.1 hacking target after legal power grab
Be afeared, me hearties, these scoundrels be spying our signals
Blood-crazed Microsoft axes Trustworthy Computing Group
Security be not a dirty word, me Satya. But crevice, bigod...
prev story

Whitepapers

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.
WIN a very cool portable ZX Spectrum
Win a one-off portable Spectrum built by legendary hardware hacker Ben Heck
Storage capacity and performance optimization at Mizuno USA
Mizuno USA turn to Tegile storage technology to solve both their SAN and backup issues.
High Performance for All
While HPC is not new, it has traditionally been seen as a specialist area – is it now geared up to meet more mainstream requirements?
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.