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USN-5179-2: BusyBox vulnerability

10 May 2022

BusyBox could be made to crash or run programs if it received specially crafted input.



  • busybox - Tiny utilities for small and embedded systems


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

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


Related notices

  • USN-5179-1: busybox-syslogd, busybox, busybox-static, udhcpd, busybox-initramfs, udhcpc