Feeds

Rackspace patches Windows Updater vuln

Get patching lest this remote execution problem bite you somewhere cloudy

Choosing a cloud hosting partner with confidence

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. ®

Top 5 reasons to deploy VMware with Tegile

Whitepapers

Why and how to choose the right cloud vendor
The benefits of cloud-based storage in your processes. Eliminate onsite, disk-based backup and archiving in favor of cloud-based data protection.
Getting started with customer-focused identity management
Learn why identity is a fundamental requirement to digital growth, and how without it there is no way to identify and engage customers in a meaningful way.
Driving business with continuous operational intelligence
Introducing an innovative approach offered by ExtraHop for producing continuous operational intelligence.
10 threats to successful enterprise endpoint backup
10 threats to a successful backup including issues with BYOD, slow backups and ineffective security.
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.