=========================================================================Ubuntu Security Notice USN-5179-2
May 10, 2022
busybox vulnerability
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 16.04 ESM
Summary:
BusyBox could be made to crash or run programs if it received specially
crafted input.
Software Description:
- busybox: Tiny utilities for small and embedded systems
Details:
USN-5179-1 fixed vulnerabilities in BusyBox. This update provides the
corresponding updates for Ubuntu 16.04 ESM.
Original advisory details:
It was discovered that BusyBox incorrectly handled certain malformed gzip
archives. If a user or automated system were tricked into processing a
specially crafted gzip archive, a remote attacker could use this issue to
cause BusyBox to crash, resulting in a denial of service, or possibly
execute arbitrary code. (CVE-2021-28831)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 16.04 ESM:
busybox 1:1.22.0-15ubuntu1.4+esm1
busybox-initramfs 1:1.22.0-15ubuntu1.4+esm1
busybox-static 1:1.22.0-15ubuntu1.4+esm1
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-5179-2
https://ubuntu.com/security/notices/USN-5179-1
CVE-2021-28831
