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)
Published Apr 6, 2017
8.1
HIGHCVSS 3.0
EPSS 1.08%
Description
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/status, by which time the requesting process may have been replaced by a different process with the same PID that has different privileges then the original requester.
Affected products
No data.
- ≤ 1.1.18
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
AV:N/AC:M/Au:N/C:C/I:C/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.08% (0.01083) | 63.96th | v5 (v2026.06.15) |
| Sep 20, 2026 | 1.08% (0.01083) | 63.72th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.20% (0.00201) | 58.52th | v3 (v2023.03.01) |
| Apr 25, 2024 | 0.20% (0.00201) | 57.65th | v3 (v2023.03.01) |
| Mar 15, 2024 | 0.19% (0.00194) | 56.23th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.17% (0.00170) | 52.90th | v3 (v2023.03.01) |
| Dec 18, 2023 | 0.22% (0.00217) | 59.59th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.22% (0.00222) | 58.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.89% (0.00885) | 10.50th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.42% (0.00416) | 10.04th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.42% (0.00416) | 0.00th | v1 |
References (1)
- https://github.com/bit-team/backintime/commit/7f208dc547f569b689c888103e3b593a48cd1869 x_refsource_MISCThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://github.com/bit-team/backintime/commit/7f208dc547f569b689c888103e3b593a48cd1869 | x_refsource_MISCThird Party Advisory |
Change history (0)
No recorded changes yet.