An issue was discovered in rsync before 3.2.5 that allows malicious remote servers to write arbitrary files inside the directories of connecting peers. The server chooses which files/directories are sent to the client. However, the rsync client performs insufficient validation of file names. A malicious rsync server (or Man-in-The-Middle attacker) can overwrite arbitrary files in the rsync client target directory and subdirectories (for example, overwrite the .ssh/authorized_keys file).
| Software | From | Fixed in |
|---|---|---|
| samba / rsync | - | 3.2.5 |
| fedoraproject / fedora | 35 | 35.x |
| fedoraproject / fedora | 36 | 36.x |