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)
{ "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro", "binaries": [ { "binary_version": "1:1.22.0-15ubuntu1.4+esm1", "binary_name": "busybox" }, { "binary_version": "1:1.22.0-15ubuntu1.4+esm1", "binary_name": "busybox-dbgsym" }, { "binary_version": "1:1.22.0-15ubuntu1.4+esm1", "binary_name": "busybox-initramfs" }, { "binary_version": "1:1.22.0-15ubuntu1.4+esm1", "binary_name": "busybox-initramfs-dbgsym" }, { "binary_version": "1:1.22.0-15ubuntu1.4+esm1", "binary_name": "busybox-static" }, { "binary_version": "1:1.22.0-15ubuntu1.4+esm1", "binary_name": "busybox-static-dbgsym" }, { "binary_version": "1:1.22.0-15ubuntu1.4+esm1", "binary_name": "busybox-syslogd" }, { "binary_version": "1:1.22.0-15ubuntu1.4+esm1", "binary_name": "busybox-udeb" }, { "binary_version": "1:1.22.0-15ubuntu1.4+esm1", "binary_name": "busybox-udeb-dbgsym" }, { "binary_version": "1:1.22.0-15ubuntu1.4+esm1", "binary_name": "udhcpc" }, { "binary_version": "1:1.22.0-15ubuntu1.4+esm1", "binary_name": "udhcpd" } ] }