Snapd seccomp filter TIOCSTI ioctl bypass
Published Apr 23, 2019
7.5
HIGHCVSS 3.1
EPSS 3.70%
Description
A vulnerability in the seccomp filters of Canonical snapd before version 2.37.4 allows a strict mode snap to insert characters into a terminal on a 64-bit host. The seccomp rules were generated to match 64-bit ioctl(2) commands on a 64-bit platform; however, the Linux kernel only uses the lower 32 bits to determine which ioctl(2) commands to run. This issue affects: Canonical snapd versions prior to 2.37.4.
Affected products
-
- Version unspecifiedStatusaffectedConstraints<2.37.4
- Version
Configuration 2
- 14.04
- 16.04
- 18.04
- 18.10
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
AV:N/AC:L/Au:N/C:N/I:P/A:N
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
- 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 1, 2026 | 3.70% (0.03700) | 89.38th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.70% (0.03700) | 88.27th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.84% (0.00838) | 73.06th | v4 (v2025.03.14) |
| Dec 17, 2024 | 0.78% (0.00776) | 81.15th | v3 (v2023.03.01) |
| May 7, 2024 | 2.07% (0.02073) | 88.98th | v3 (v2023.03.01) |
| Feb 28, 2024 | 2.02% (0.02025) | 88.58th | v3 (v2023.03.01) |
| Feb 10, 2024 | 1.79% (0.01791) | 87.66th | v3 (v2023.03.01) |
| Feb 8, 2024 | 1.68% (0.01677) | 87.25th | v3 (v2023.03.01) |
| Jan 8, 2024 | 1.78% (0.01782) | 86.70th | v3 (v2023.03.01) |
| Dec 19, 2023 | 1.49% (0.01489) | 85.40th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.40% (0.01395) | 84.30th | v3 (v2023.03.01) |
| Mar 6, 2023 | 8.38% (0.08382) | 93.89th | v2 (v2022.01.01) |
| Apr 1, 2022 | 8.38% (0.08382) | 93.35th | v2 (v2022.01.01) |
| Feb 4, 2022 | 12.94% (0.12940) | 90.20th | v2 (v2022.01.01) |
| Feb 3, 2022 | 2.74% (0.02742) | 63.06th | v5 (v2026.06.15) |
| Apr 14, 2021 | 2.74% (0.02742) | 0.00th | v1 |
References (2)
- https://usn.ubuntu.com/3917-1/ x_refsource_MISCThird Party Advisory
- https://www.exploit-db.com/exploits/46594 x_refsource_MISCExploitThird Party AdvisoryVDB Entry
| Link | Providers | Tags |
|---|---|---|
| https://usn.ubuntu.com/3917-1/ | x_refsource_MISCThird Party Advisory | |
| https://www.exploit-db.com/exploits/46594 | x_refsource_MISCExploitThird Party AdvisoryVDB Entry |
Change history (0)
No recorded changes yet.