Feeds

LAND attack threat 'not significant', says Microsoft

French alert doesn't stack up to much, apparently

  • alert
  • submit to reddit

Choosing a cloud hosting partner with confidence

Microsoft has rejected the seriousness of a security warning about its software. On Tuesday the French Security Incident Response Team (FrSIRT) issued an alert about a security bug in Microsoft's implementation of TCP/IP in Windows XP and 2003.

The flaw in the Windows IPv6 TCP/IP stack means systems are liable to crash when processing maliciously crafted packets in which the SYN flag is set, and the source address and port are the same as the destination address and port (a so-called Land Attack). FrSIRT said that even systems running the latest, fully patched versions of XP SP2 or Win 2003 SP1 could be crashed using an attack based on the vulnerability.

Microsoft disputes this point, arguing that customer running XP SP2 or Win 2003 SP1 or those who'd applied a patch release in April (MS05-019) are protected. No customers have reported attacks based on the reported vulnerability, it says. "We do not consider this to be a significant threat to the security of the Internet. This is similar to other TCP connection reset issues," it said in an advisory published Wednesday, 18 May.

According to FrSIRT, Microsoft's April fix only addresses a variant of the latest vulnerability, an IPv4 Land attack risk, not the IPv6 attack that formed the subject of its Tuesday alert. It advises corporates to filter potentially malicious traffic at the firewall pending a more comprehensive fix. ®

Related stories

Microsoft unveils details of software security process
Microsoft hunts web nasties with honey monkeys
Networks on yellow alert over ICMP flaw
Eight patches - five critical - in MS April patch batch

Top 5 reasons to deploy VMware with Tegile

More from The Register

next story
Regin: The super-spyware the security industry has been silent about
NSA fingered as likely source of complex malware family
Why did it take antivirus giants YEARS to drill into super-scary Regin? Symantec responds...
FYI this isn't just going to target Windows, Linux and OS X fans
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
'Regin': The 'New Stuxnet' spook-grade SOFTWARE WEAPON described
'A degree of technical competence rarely seen'
Astro-boffins start opening universe simulation data
Got a supercomputer? Want to simulate a universe? Here you go
prev story

Whitepapers

Driving business with continuous operational intelligence
Introducing an innovative approach offered by ExtraHop for producing continuous operational intelligence.
Why CIOs should rethink endpoint data protection in the age of mobility
Assessing trends in data protection, specifically with respect to mobile devices, BYOD, and remote employees.
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.
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?
Protecting against web application threats using SSL
SSL encryption can protect server‐to‐server communications, client devices, cloud resources, and other endpoints in order to help prevent the risk of data loss and losing customer trust.