In LightDM through 1.22.0, a directory traversal issue in debian/guest-account.sh allows local attackers to own arbitrary directory path locations and escalate privileges to root when the guest user logs out
Published Apr 5, 2017
7.3
HIGHCVSS 3.0
EPSS 2.67%
Description
In LightDM through 1.22.0, a directory traversal issue in debian/guest-account.sh allows local attackers to own arbitrary directory path locations and escalate privileges to root when the guest user logs out.
Affected products
No data.
Configuration 1
- ≤ 1.22.0
Configuration 2
- 16.04
- 16.10
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:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
AV:L/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 4, 2026.
Score over time
2021-2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (16 key points)
Flat stretches are collapsed. Showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 4, 2026 | 2.67% (0.02669) | 85.25th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.67% (0.02669) | 83.73th | v5 (v2026.06.15) |
| Mar 30, 2025 | 1.02% (0.01019) | 75.20th | v4 (v2025.03.14) |
| Mar 29, 2025 | 4.94% (0.04936) | 82.35th | v4 (v2025.03.14) |
| Mar 28, 2025 | 1.02% (0.01019) | 75.21th | v4 (v2025.03.14) |
| Mar 27, 2025 | 4.94% (0.04936) | 88.19th | v4 (v2025.03.14) |
| Mar 20, 2025 | 1.02% (0.01019) | 75.29th | v4 (v2025.03.14) |
| Mar 19, 2025 | 4.94% (0.04936) | 88.35th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.02% (0.01019) | 75.68th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.06% (0.00062) | 28.69th | v3 (v2023.03.01) |
| Jun 13, 2024 | 0.06% (0.00062) | 26.70th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.06% (0.00062) | 24.69th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.57% (0.02569) | 82.02th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.11% (0.02115) | 56.78th | v2 (v2022.01.01) |
| Feb 3, 2022 | 3.39% (0.03394) | 66.86th | v5 (v2026.06.15) |
| Apr 14, 2021 | 3.39% (0.03394) | 0.00th | v1 |
References (6)
- http://bazaar.launchpad.net/~lightdm-team/lightdm/trunk/revision/2478 x_refsource_CONFIRMThird Party AdvisoryVDB Entry
- http://www.securityfocus.com/bid/97486 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://launchpad.net/bugs/1677924 x_refsource_CONFIRMThird Party AdvisoryVDB Entry
- https://lists.freedesktop.org/archives/lightdm/2017-April/001059.html x_refsource_CONFIRMThird Party AdvisoryVDB Entry
- https://www.exploit-db.com/exploits/41923/ exploitx_refsource_EXPLOIT-DB
- https://www.ubuntu.com/usn/usn-3255-1/ x_refsource_CONFIRMThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| http://bazaar.launchpad.net/~lightdm-team/lightdm/trunk/revision/2478 | x_refsource_CONFIRMThird Party AdvisoryVDB Entry | |
| http://www.securityfocus.com/bid/97486 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://launchpad.net/bugs/1677924 | x_refsource_CONFIRMThird Party AdvisoryVDB Entry | |
| https://lists.freedesktop.org/archives/lightdm/2017-April/001059.html | x_refsource_CONFIRMThird Party AdvisoryVDB Entry | |
| https://www.exploit-db.com/exploits/41923/ | exploitx_refsource_EXPLOIT-DB | |
| https://www.ubuntu.com/usn/usn-3255-1/ | x_refsource_CONFIRMThird Party Advisory |
Change history (0)
No recorded changes yet.