CRITICAL
A flaw exists in OpenBSD's implementation of the stack guard page that allows attackers to bypass it resulting in arbitrary code execution using setuid binaries such as /usr/bin/at
Published Jun 19, 2017
9.8
CRITICALCVSS 3.0
EPSS 3.96%
Description
A flaw exists in OpenBSD's implementation of the stack guard page that allows attackers to bypass it resulting in arbitrary code execution using setuid binaries such as /usr/bin/at. This affects OpenBSD 6.1 and possibly earlier versions.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
9.8 CRITICAL NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
7.5 HIGH NVD
AV:N/AC:L/Au:N/C:P/I:P/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
3.96% 0.03955
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
EPSS probability 0.03955
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (18 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 3.96% (0.03955) | 90.11th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.96% (0.03955) | 89.05th | v5 (v2026.06.15) |
| Oct 6, 2025 | 0.92% (0.00922) | 75.19th | v4 (v2025.03.14) |
| Mar 30, 2025 | 5.37% (0.05368) | 89.12th | v4 (v2025.03.14) |
| Mar 29, 2025 | 19.69% (0.19691) | 92.54th | v4 (v2025.03.14) |
| Mar 17, 2025 | 5.37% (0.05368) | 89.38th | v4 (v2025.03.14) |
| Jul 20, 2024 | 0.71% (0.00709) | 80.64th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.71% (0.00709) | 79.79th | v3 (v2023.03.01) |
| May 30, 2023 | 0.71% (0.00709) | 77.61th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.72% (0.00721) | 77.57th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.58% (0.02578) | 82.08th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.58% (0.02578) | 80.28th | v2 (v2022.01.01) |
| Mar 16, 2022 | 2.58% (0.02578) | 62.47th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.51% (0.02509) | 58.60th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.46% (0.01458) | 32.87th | v1 |
| Jan 6, 2022 | 1.46% (0.01458) | 32.17th | v1 |
| Sep 1, 2021 | 1.46% (0.01458) | 72.29th | v1 |
| Apr 14, 2021 | 1.46% (0.01458) | 0.00th | v1 |
Weaknesses (0)
No CWE recorded.
References (3)
- http://www.securityfocus.com/bid/99172 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://ftp.openbsd.org/pub/OpenBSD/patches/6.1/common/008_exec_subr.patch.sig x_refsource_MISCMailing ListVendor Advisory
- https://www.qualys.com/2017/06/19/stack-clash/stack-clash.txt x_refsource_MISCMailing ListThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/99172 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://ftp.openbsd.org/pub/OpenBSD/patches/6.1/common/008_exec_subr.patch.sig | x_refsource_MISCMailing ListVendor Advisory | |
| https://www.qualys.com/2017/06/19/stack-clash/stack-clash.txt | x_refsource_MISCMailing ListThird Party Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Jun 19, 2017
Updated Aug 5, 2024
Reserved Jun 19, 2017
Link CVE-2017-1000372
CISA Vulnrichment
Updated n/a