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.
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.
24 April 2019
A security issue affects these releases of Ubuntu and its derivatives:
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.
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.
The problem can be corrected by updating your system to the following package versions:
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.