The _checkPolkitPrivilege function in serviceHelper.py in Back In Time (aka backintime) 1.1.18 and earlier uses a deprecated polkit authorization method (unix-process) that is subject to a race condition (time of check, time of use). With this authorization method, the owner of a process requesting a polkit operation is checked by polkitd via /proc/<pid>/status, by which time the requesting process may have been replaced by a different process with the same PID that has different privileges then the original requester.
CVSS Details
- CVSS 3.0 Base Score: 8.1
- CVSS 3.0 Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade backintime | Jul 30, 2024 | Apr 6, 2017 |
| Suse | — | suse-upgrade-backintimesuse-upgrade-backintime-langsuse-upgrade-backintime-qt4 | May 2, 2017 | Apr 6, 2017 |
| Ubuntu | ubuntu-upgrade-backintime | Nov 19, 2024 | Apr 6, 2017 |
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