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Ubuntu Security Notice USN-1127-1

Ubuntu Security Notice USN-1127-1
Posted May 2, 2011
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1127-1 - 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.

tags | advisory, arbitrary, local
systems | linux, ubuntu
advisories | CVE-2011-1828
MD5 | 8a35430376e418df700c9271698cb537

Ubuntu Security Notice USN-1127-1

Change Mirror Download
==========================================================================
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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