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             AUSCERT External Security Bulletin Redistribution

                    USN-3955-1: tcpflow vulnerabilities
                               26 April 2019


        AusCERT Security Bulletin Summary

Product:           tcpflow
Publisher:         Ubuntu
Operating System:  Ubuntu
                   UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Denial of Service        -- Remote/Unauthenticated
                   Access Confidential Data -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-18409 CVE-2018-14938 

Original Bulletin: 

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

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USN-3955-1: tcpflow vulnerabilities
24 April 2019

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

  o Ubuntu 18.10
  o Ubuntu 18.04 LTS
  o Ubuntu 16.04 LTS


tcpflow could be made to crash or expose sensitive information over the network
if it opened a specially crafted file or received specially crafted network

Software Description

  o tcpflow - TCP flow recorder


It was discovered that tcpflow incorrectly handled certain malformed network
packets. A remote attacker could send these packets to a target system, causing
tcpflow to crash or possibly disclose sensitive information.

Update instructions

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

Ubuntu 18.10
    tcpflow - 1.4.5+repack1-4ubuntu0.18.10.1
    tcpflow-nox - 1.4.5+repack1-4ubuntu0.18.10.1
Ubuntu 18.04 LTS
    tcpflow - 1.4.5+repack1-4ubuntu0.18.04.1
    tcpflow-nox - 1.4.5+repack1-4ubuntu0.18.04.1
Ubuntu 16.04 LTS
    tcpflow - 1.4.5+repack1-1ubuntu0.1
    tcpflow-nox - 1.4.5+repack1-1ubuntu0.1

To update your system, please follow these instructions: https://
wiki.ubuntu.com/Security/Upgrades .

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


  o CVE-2018-14938
  o CVE-2018-18409

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