Ubuntu alert USN-1127-1 (usb-creator)

From:
    	     
 
Marc Deslauriers <marc.deslauriers@canonical.com> 
To:
    	     
 
ubuntu-security-announce@lists.ubuntu.com 
Subject:
    	     
 
[USN-1127-1] usb-creator vulnerability 
Date:
    	     
 
Mon, 02 May 2011 11:41:28 -0400
Message-ID:
    	     
 
<1304350888.3151.242.camel@mdlinux>
Cc:
    	     
 
full-disclosure@lists.grok.org.uk, bugtraq@securityfocus.com
Archive‑link:
 
        	
Article
==========================================================================
Ubuntu Security Notice USN-1127-1
May 02, 2011

usb-creator vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 11.04
- Ubuntu 10.10
- Ubuntu 10.04 LTS

Summary:

An attacker could use usb-creator to unmount arbitrary disks or perform
other unauthorized disk operations.

Software Description:
- usb-creator: create a startup disk using a CD or disc image (common files)

Details:

Evan Broder discovered that usb-creator did not properly enforce
restrictions when performing privileged disk operations. A local attacker
could use this flaw to perform certain disk operations, such as unmount
arbitrary mountpoints.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 11.04:
  usb-creator-common              0.2.28.3

Ubuntu 10.10:
  usb-creator-common              0.2.25.3

Ubuntu 10.04 LTS:
  usb-creator-common              0.2.22.3

In general, a standard system update will make all the necessary changes.

References:
  CVE-2011-1828

Package Information:
  https://launchpad.net/ubuntu/+source/usb-creator/0.2.28.3
  https://launchpad.net/ubuntu/+source/usb-creator/0.2.25.3
  https://launchpad.net/ubuntu/+source/usb-creator/0.2.22.3


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