Description
CgiUserConfigEdit in BackupPC 3.1.0, when SSH keys and Rsync are in use in a multi-user environment, does not restrict users from the ClientNameAlias function, which allows remote authenticated users to read and write sensitive files by modifying ClientNameAlias to match another system, then initiating a backup or restore.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | backuppc | 3.1.0-8 | — |
| Debian 13 | backuppc | 3.1.0-8 | — |
| Debian 12 | backuppc | 3.1.0-8 | — |
References
- https://bugzilla.redhat.com/show_bug.cgi?id=518412
- 36393 third-party-advisory
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=542218
- FEDORA-2009-9973 vendor-advisory
- FEDORA-2009-9982 vendor-advisory
- 37161 third-party-advisory
- 57236 vdb-entry