Feeds

Rackspace patches Windows Updater vuln

Get patching lest this remote execution problem bite you somewhere cloudy

Top 5 reasons to deploy VMware with Tegile

Rackspace has patched an arbitrary code execution bug in its Windows environment, following an advisory from CloudPassage.

CloudPassage discovered that the Rackspace Windows Agent and Updater allowed unauthenticated users to upload a modified version of the agent binary to Rackspace Cloud Server instances. The modified code would then be treated as a normal update: when the service restarts after the update, an attacker could then execute arbitrary code.

As explained by CloudPassage, the Rackspace-written Windows Agent and Updater handle boot config for Windows guests running on the Xen hypervisor, running as services under the LocalSystem account.

Pre-1.2.6.0 Updater versions allowed unsigned updates using a crafted .NET call to Port 1984 (El Reg presumes the port number is pure coincidence), which sends a .NET serialisable object with a URL and MD5 checksum to the target. The target system would then download a zipfile, check it against the checksum, extract it into the program folder of the Agent service, and restart the service. As its proof-of-concept, CloudPassage used the und3auth tool to put a backdoor into the Agent binary.

The fixed Updater no longer listens on Port 1984, and uses IPC with XenStore. ®

Internet Security Threat Report 2014

More from The Register

next story
'Kim Kardashian snaps naked selfies with a BLACKBERRY'. *Twitterati gasps*
More alleged private, nude celeb pics appear online
Home Depot ignored staff warnings of security fail laundry list
'Just use cash', former security staffer warns friends
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
Who.is does the Harlem Shake
Blame it on LOLing XSS terroristas
Snowden, Dotcom, throw bombs into NZ election campaign
Claim of tapped undersea cable refuted by Kiwi PM as Kim claims extradition plot
Freenode IRC users told to change passwords after securo-breach
Miscreants probably got in, you guys know the drill by now
THREE QUARTERS of Android mobes open to web page spy bug
Metasploit module gobbles KitKat SOP slop
BitTorrent's peer-to-peer chat app Bleep goes live as public alpha
A good day for privacy as invisble.im also reveals its approach to untraceable chats
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.
Intelligent flash storage arrays
Tegile Intelligent Storage Arrays with IntelliFlash helps IT boost storage utilization and effciency while delivering unmatched storage savings and performance.
WIN a very cool portable ZX Spectrum
Win a one-off portable Spectrum built by legendary hardware hacker Ben Heck
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?
Beginner's guide to SSL certificates
De-mystify the technology involved and give you the information you need to make the best decision when considering your online security options.