[USN-4531-1] BusyBox vulnerability

Marc Deslauriers marc.deslauriers at canonical.com
Tue Sep 22 14:28:52 UTC 2020

Ubuntu Security Notice USN-4531-1
September 22, 2020

busybox vulnerability

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

- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS


Fraudulent security certificates could allow sensitive information to
be exposed when accessing the Internet.

Software Description:
- busybox: Tiny utilities for small and embedded systems


It was discovered that the BusyBox wget applet incorrectly validated SSL
certificates. A remote attacker could possibly use this issue to intercept
secure communications.

Update instructions:

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

Ubuntu 20.04 LTS:
  busybox                         1:1.30.1-4ubuntu6.2
  busybox-initramfs               1:1.30.1-4ubuntu6.2
  busybox-static                  1:1.30.1-4ubuntu6.2

Ubuntu 18.04 LTS:
  busybox                         1:1.27.2-2ubuntu3.3
  busybox-initramfs               1:1.27.2-2ubuntu3.3
  busybox-static                  1:1.27.2-2ubuntu3.3

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


Package Information:

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