USN-8168-2: Rust vulnerability
USN-8168-1 fixed a vulnerability in Rust. This update provides the
corresponding update to Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04
LTS and Ubuntu 20.04 LTS.
Original advisory details:
It was discovered that tar-rs embedded in rustc incorrectly handled
symlinks when unpacking a tar archive. If a user or automated system were
tricked into processing a specially crafted tar archive, a remote attacker
could use this issue to modify permissions of arbitrary directories
outside the extraction root, and possibly escalate privileges.