CRITICAL
Integer underflow in Sandstorm Cap'n Proto before 0.4.1.1 and 0.5.x before 0.5.1.1 might allow remote peers to cause a denial of service or possibly obtain sensitive information from memory or execute arbitrary code via a crafted message
Published Aug 9, 2017
9.8
CRITICALCVSS 3.0
EPSS 2.54%
Description
Integer underflow in Sandstorm Cap'n Proto before 0.4.1.1 and 0.5.x before 0.5.1.1 might allow remote peers to cause a denial of service or possibly obtain sensitive information from memory or execute arbitrary code via a crafted message.
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.
2.54% 0.02540
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
EPSS probability 0.02540
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (15 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 2.54% (0.02540) | 84.43th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.54% (0.02540) | 82.87th | v5 (v2026.06.15) |
| Mar 30, 2025 | 1.05% (0.01055) | 75.60th | v4 (v2025.03.14) |
| Mar 29, 2025 | 2.92% (0.02916) | 77.30th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.05% (0.01055) | 76.05th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.71% (0.00709) | 81.08th | v3 (v2023.03.01) |
| Feb 27, 2024 | 0.71% (0.00709) | 79.85th | v3 (v2023.03.01) |
| Jul 20, 2023 | 0.71% (0.00709) | 77.85th | v3 (v2023.03.01) |
| May 8, 2023 | 0.72% (0.00720) | 77.72th | v3 (v2023.03.01) |
| Mar 29, 2023 | 0.67% (0.00672) | 76.75th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.56% (0.00564) | 74.35th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.46% (0.02464) | 81.64th | v2 (v2022.01.01) |
| May 6, 2022 | 2.46% (0.02464) | 80.08th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.40% (0.02398) | 79.76th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.40% (0.02398) | 58.39th | v2 (v2022.01.01) |
Weaknesses (1)
References (4)
- http://www.openwall.com/lists/oss-security/2015/03/17/3 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=780566 x_refsource_MISCMailing ListThird Party Advisory
- https://github.com/capnproto/capnproto/blob/master/security-advisories/2015-03-02-1-c%2B%2B-integer-underflow.md x_refsource_CONFIRMThird Party Advisory
- https://github.com/capnproto/capnproto/commit/26bcceda72372211063d62aab7e45665faa83633 x_refsource_CONFIRMThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2015/03/17/3 | mailing-listx_refsource_MLISTMailing ListThird Party Advisory | |
| https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=780566 | x_refsource_MISCMailing ListThird Party Advisory | |
| https://github.com/capnproto/capnproto/blob/master/security-advisories/2015-03-02-1-c%2B%2B-integer-underflow.md | x_refsource_CONFIRMThird Party Advisory | |
| https://github.com/capnproto/capnproto/commit/26bcceda72372211063d62aab7e45665faa83633 | x_refsource_CONFIRMThird Party Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner debian
Published Aug 9, 2017
Updated Aug 6, 2024
Reserved Mar 17, 2015
Link CVE-2015-2311
CISA Vulnrichment
Updated n/a