Ubuntu Security Notice USN-3955-1

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Ubuntu Security Notice USN-3955-1
April 24, 2019

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

– Ubuntu 18.10
– Ubuntu 18.04 LTS
– Ubuntu 16.04 LTS

Summary:

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
traffic.

Software Description:
– tcpflow: TCP flow recorder

Details:

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 versions:

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

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

References:
https://usn.ubuntu.com/usn/usn-3955-1
CVE-2018-14938, CVE-2018-18409

Package Information:
https://launchpad.net/ubuntu/+source/tcpflow/1.4.5+repack1-4ubuntu0.18.10.1
https://launchpad.net/ubuntu/+source/tcpflow/1.4.5+repack1-4ubuntu0.18.04.1
https://launchpad.net/ubuntu/+source/tcpflow/1.4.5+repack1-1ubuntu0.1