Feeds

Rackspace patches Windows Updater vuln

Get patching lest this remote execution problem bite you somewhere cloudy

Protecting against web application threats using SSL

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. ®

Reducing the cost and complexity of web vulnerability management

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
TOR users become FBI's No.1 hacking target after legal power grab
Be afeared, me hearties, these scoundrels be spying our signals
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
NORKS ban Wi-Fi and satellite internet at embassies
Crackdown on tardy diplomatic sysadmins providing accidental unfiltered internet access
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?
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
Intelligent flash storage arrays
Tegile Intelligent Storage Arrays with IntelliFlash helps IT boost storage utilization and effciency while delivering unmatched storage savings and performance.
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.