1. Ubuntu Security Notices
  2. USN-4872-1

USN-4872-1: Axel vulnerability

Publication date

15 March 2021

Overview

Axel could be made to expose sensitive information over the network.

Releases

Packages

  • axel - light command line download accelerator

Details

It was discovered that Axel did not properly verify the certificates for hostnames. An
attacker could use this vulnerability to impersonate another server and obtain
sensitive information.

It was discovered that Axel did not properly verify the certificates for hostnames. An
attacker could use this vulnerability to impersonate another server and obtain
sensitive information.

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
20.04 focal axel –  2.17.5-1ubuntu1+esm1  
18.04 bionic axel –  2.16.1-1ubuntu0.1~esm1  

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References

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