An issue was discovered in evaluate_auto_mountpoint in btrfsmaintenance-functions in btrfsmaintenance through 0.4.1. Code execution as root can occur via a specially crafted filesystem label if btrfs-{scrub,balance,trim} are set to auto in /etc/sysconfig/btrfsmaintenance (this is not the default, though).
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Btrfsmaintenance | Btrfsmaintenance_project | * | 0.4.1 (including) |
| Btrfsmaintenance | Ubuntu | cosmic | * |
| Btrfsmaintenance | Ubuntu | disco | * |
| Btrfsmaintenance | Ubuntu | eoan | * |
| Btrfsmaintenance | Ubuntu | focal | * |
| Btrfsmaintenance | Ubuntu | groovy | * |
| Btrfsmaintenance | Ubuntu | hirsute | * |
| Btrfsmaintenance | Ubuntu | impish | * |
| Btrfsmaintenance | Ubuntu | kinetic | * |
| Btrfsmaintenance | Ubuntu | lunar | * |
| Btrfsmaintenance | Ubuntu | mantic | * |
| Btrfsmaintenance | Ubuntu | oracular | * |
| Btrfsmaintenance | Ubuntu | plucky | * |
References
- http://www.openwall.com/lists/oss-security/2018/08/14/7
- http://www.openwall.com/lists/oss-security/2019/06/27/7
- http://www.openwall.com/lists/oss-security/2019/06/28/1
- http://www.openwall.com/lists/oss-security/2019/06/28/2
- https://bugzilla.suse.com/show_bug.cgi?id=1102721
- http://www.openwall.com/lists/oss-security/2018/08/14/7
- http://www.openwall.com/lists/oss-security/2019/06/27/7
- http://www.openwall.com/lists/oss-security/2019/06/28/1
- http://www.openwall.com/lists/oss-security/2019/06/28/2
- https://bugzilla.suse.com/show_bug.cgi?id=1102721