In UNIX Fourth Research Edition (v4), the su command is vulnerable to a buffer overflow due to the 'password' variable having a fixed size of 100 bytes. A local

In UNIX Fourth Research Edition (v4), the su command is vulnerable to a buffer overflow due to the 'password' variable having a fixed size of 100 bytes. A local user can exploit this to gain root privileges. It is unlikely that UNIX v4 is running anywhere outside of a very small number of lab environments. Related: https://www.tomshardware.com/software/linux/unix-v4-recovered-from-randomly-found-tape-at-university-of-utah-only-known-copy-of-first-os-version-with-kernel-and-core-utilities-written-in-c https://www.tomshardware.com/software/linux/unix-v4-recovere...