/bin/login in shadow 4.0.18.1 in Debian GNU/Linux, and probably other Linux distributions, allows local users in the utmp group to overwrite arbitrary files via a symlink attack on a temporary file referenced in a line (aka ut_line) field in a utmp entry.
| Software | From | Fixed in |
|---|---|---|
| debian / shadow | 4.0.18.1 | 4.0.18.1.x |