Ubuntu alert USN-3667-1 (libytnef)

From:
    	     
 
"Leonidas S. Barbosa" <leo.barbosa@canonical.com> 
To:
    	     
 
ubuntu-security-announce@lists.ubuntu.com 
Subject:
    	     
 
[USN-3667-1] libytnef vulnerabilities 
Date:
    	     
 
Thu, 31 May 2018 18:15:11 -0300
Message-ID:
    	     
 
<1527801311.12809.10.camel@canonical.com>
==========================================================================
Ubuntu Security Notice USN-3667-1
May 31, 2018

libytnef vulnerabilities
==========================================================================

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

- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in libytnef.

Software Description:
- libytnef: improved decoder for application/ms-tnef attachments

Details:

It was discovered that libytnef incorrectly handled certain files.
An attacker could possibly use this to cause a denial of service.
(CVE-2017-12141, CVE-2017-9146, CVE-2017-9471, CVE-2017-9473)

It was discovered that libytnef incorrectly handled certain files.
An attacker could possibly use this to access sensitive information.
(CVE-2017-9058)

Update instructions:

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

Ubuntu 14.04 LTS:
  libytnef0                       1.5-6ubuntu0.2

After a standard system update you need to restart applications using
libytnef, such as Evolution, to make all the necessary changes.

References:
  https://usn.ubuntu.com/usn/usn-3667-1
  CVE-2017-12141, CVE-2017-9058, CVE-2017-9146, CVE-2017-9471,
  CVE-2017-9473

Package Information:
  https://launchpad.net/ubuntu/+source/libytnef/1.5-6ubuntu0.2-- 
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