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[USN-1351-1] AccountsService vulnerability

Posted on 31 January 2012
Ubuntu Security

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Ubuntu Security Notice USN-1351-1
January 31, 2012

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

- Ubuntu 11.10

Summary:

AccountsService could be made to overwrite files as the administrator.

Software Description:
- accountsservice: query and manipulate user account information

Details:

Hayawardh Vijayakumar discovered that AccountsService incorrectly handled
privileges when modifying the language settings on Ubuntu. A local attacker
could exploit this issue to modify arbitrary files, and possibly create a
denial of service or obtain increased privileges.

Update instructions:

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

Ubuntu 11.10:
accountsservice 0.6.14-1git1ubuntu1.1

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
http://www.ubuntu.com/usn/usn-1351-1
CVE-2011-4406

Package Information:
https://launchpad.net/ubuntu/+source/accountsservice/0.6.14-1git1ubuntu1.=
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