ESB-2018.3478 - [Linux][Ubuntu] ppp: Multiple vulnerabilities 2018-11-07

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.3478
                    ppp vulnerability patched in Ubuntu
                              7 November 2018

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           ppp
Publisher:         Ubuntu
Operating System:  Ubuntu
                   Linux variants
Impact/Access:     Denial of Service        -- Remote/Unauthenticated
                   Access Confidential Data -- Remote/Unauthenticated
                   Unauthorised Access      -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-11574  

Original Bulletin: 
   http://www.ubuntu.com/usn/usn-3810-1

Comment: This advisory references vulnerabilities in products which run on 
         platforms other than Ubuntu. It is recommended that administrators 
         running ppp check for an updated version of the software for their 
         operating system.

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==========================================================================
Ubuntu Security Notice USN-3810-1
November 06, 2018

ppp vulnerability
==========================================================================

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

- - Ubuntu 18.04 LTS
- - Ubuntu 16.04 LTS
- - Ubuntu 14.04 LTS

Summary:

ppp could be made to crash or bypass authentication if it received
specially crafted network traffic.

Software Description:
- - ppp: Point-to-Point Protocol (PPP)

Details:

Ivan Gotovchits discovered that ppp incorrectly handled the EAP-TLS
protocol. A remote attacker could use this issue to cause ppp to crash,
resulting in a denial of service, or possibly bypass authentication.

Update instructions:

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

Ubuntu 18.04 LTS:
  ppp                             2.4.7-2+2ubuntu1.1

Ubuntu 16.04 LTS:
  ppp                             2.4.7-1+2ubuntu1.16.04.1

Ubuntu 14.04 LTS:
  ppp                             2.4.5-5.1ubuntu2.3

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

References:
  https://usn.ubuntu.com/usn/usn-3810-1
  CVE-2018-11574

Package Information:
  https://launchpad.net/ubuntu/+source/ppp/2.4.7-2+2ubuntu1.1
  https://launchpad.net/ubuntu/+source/ppp/2.4.7-1+2ubuntu1.16.04.1
  https://launchpad.net/ubuntu/+source/ppp/2.4.5-5.1ubuntu2.3

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