Feeds

Sasser worm creates havoc

Blaster Mk II hits railways and banks

  • alert
  • submit to reddit

Beginner's guide to SSL certificates

European sysadmins returning to work after a long Bank Holiday weekend are in for a nasty surprise with the appearance of a fast-spreading Blaster-like Internet worm.

Sasser exploits a recently-announced serious Windows vulnerability - a buffer overrun in Windows' Local Security Authority Subsystem Service. The fix for this bug has caused widespread problems, but has now become double-plus critical. So apply with caution.

Since its arrival on Saturday, Sasser has spawned three new versions. None spread by email. Each targets vulnerable Win 2000 and XP PCs.

When launched, the worm registers itself in the system registry and begins to aggressively scan IP addresses for PCs which have the vulnerability described in MS04-011. A vulnerable computer will accept commands to download and launch copies of the worm. Downloading is carried out by the FTP protocol. As with Blaster, infected systems will often become unstable, but it's the aggressive scanning behaviour associated with the worm that's causing the most problems.

Computer systems of Sampo, Finland's third largest bank, RailCorp in Australia and various other networks were hard hit by Sasser, resulting in operational problems.

Defensive measures involve the use of firewalls and applying patches from Microsoft. Anti-virus software will help with disinfecting systems -but once again this been found wanting in stopping the outbreak of a fast-spreading Internet worm. ®

Related stories

Blaster body count '8m or above' - MS
Blaster beats up British business
Blaster rewrites Windows worm rules
MS score card: four patches, 20 vulns, heaps of trouble
MS rethinks security patch test scheme

Internet Security Threat Report 2014

More from The Register

next story
'Regin': The 'New Stuxnet' spook-grade SOFTWARE WEAPON described
'A degree of technical competence rarely seen'
You really need to do some tech support for Aunty Agnes
Free anti-virus software, expires, stops updating and p0wns the world
You stupid BRICK! PCs running Avast AV can't handle Windows fixes
Fix issued, fingers pointed, forums in flames
Privacy bods offer GOV SPY VICTIMS a FREE SPYWARE SNIFFER
Looks for gov malware that evades most antivirus
Patch NOW! Microsoft slings emergency bug fix at Windows admins
Vulnerability promotes lusers to domain overlords ... oops
HACKERS can DELETE SURVEILLANCE DVRS remotely – report
Hikvision devices wide open to hacking, claim securobods
prev story

Whitepapers

Why cloud backup?
Combining the latest advancements in disk-based backup with secure, integrated, cloud technologies offer organizations fast and assured recovery of their critical enterprise data.
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.
How to determine if cloud backup is right for your servers
Two key factors, technical feasibility and TCO economics, that backup and IT operations managers should consider when assessing cloud backup.
Reg Reader Research: SaaS based Email and Office Productivity Tools
Read this Reg reader report which provides advice and guidance for SMBs towards the use of SaaS based email and Office productivity tools.
Choosing a cloud hosting partner with confidence
Download Choosing a Cloud Hosting Provider with Confidence to learn more about cloud computing - the new opportunities and new security challenges.