Feeds

Eudora users warned over ‘reply to all’ trick

Press Send for a buffer flow flaw

  • alert
  • submit to reddit

Next gen security for virtualised datacentres

A buffer overflow vulnerability in Eudora, the popular email client, creates a mechanism for crackers to compromise targeted PCs.

The problem stems from a failure to properly verify the "From:" and "Reply-To:" when users of vulnerable versions of Eudora select "Reply-To-All". This shortcoming creates a means for hackers to spam users with a maliciously constructed email designed to trigger this buffer overflow condition.

In practice it might be hard to trick users into selecting "Reply-To-All" in response to suspicious emails. But if they do then crackers would be able to run arbitrary code on vulnerable systems, so the problem is not to be sniffed at.

The vulnerability was discovered in Eudora version 5.x by Japanese security researcher Hisayuki Shinmachi of Secure Net Services in January and announced yesterday. Users are advised to update to Eudora 5.1-Jr3 (Japanese) or Eudora 6.0 (English) in order to shore up their security defences, as explained in an advisory by Secunia here.

Although Eudora security problems are not unprecedented, the package is far less afflicted with security issues than Microsoft's email client, known in these parts as Lookout. ®

Related Stories

IE bugs keep coming
Eudora e-mail hole discovered

External Links

Eudora security problems

The essential guide to IT transformation

More from The Register

next story
Goog says patch⁵⁰ your Chrome
64-bit browser loads cat vids FIFTEEN PERCENT faster!
Chinese hackers spied on investigators of Flight MH370 - report
Classified data on flight's disappearance pinched
NIST to sysadmins: clean up your SSH mess
Too many keys, too badly managed
Scratched PC-dispatch patch patched, hatched in batch rematch
Windows security update fixed after triggering blue screens (and screams) of death
Researchers camouflage haxxor traps with fake application traffic
Honeypots sweetened to resemble actual workloads, complete with 'secure' logins
prev story

Whitepapers

Top 10 endpoint backup mistakes
Avoid the ten endpoint backup mistakes to ensure that your critical corporate data is protected and end user productivity is improved.
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.
Backing up distributed data
Eliminating the redundant use of bandwidth and storage capacity and application consolidation in the modern data center.
The essential guide to IT transformation
ServiceNow discusses three IT transformations that can help CIOs automate IT services to transform IT and the enterprise
Next gen security for virtualised datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.