Sandstorm Cap'n Proto before 0.4.1.1 and 0.5.x before 0.5.1.2, when an application invokes the totalSize method on an object reader, allows remote peers to cause a denial of service (CPU consumption) via a crafted small message, which triggers a "tight" for loop
Published Aug 9, 2017
7.5
HIGHCVSS 3.0
EPSS 1.89%
Description
Sandstorm Cap'n Proto before 0.4.1.1 and 0.5.x before 0.5.1.2, when an application invokes the totalSize method on an object reader, allows remote peers to cause a denial of service (CPU consumption) via a crafted small message, which triggers a "tight" for loop. NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-2312.
Affected products
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:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AV:N/AC:L/Au:N/C:N/I:N/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
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.89% (0.01887) | 78.77th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.89% (0.01887) | 76.75th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.60% (0.00601) | 67.64th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.28% (0.00278) | 69.11th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.28% (0.00278) | 67.34th | v3 (v2023.03.01) |
| May 8, 2023 | 0.28% (0.00278) | 63.43th | v3 (v2023.03.01) |
| Mar 29, 2023 | 0.26% (0.00259) | 61.98th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.22% (0.00217) | 57.88th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.02% (0.01018) | 40.69th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.02% (0.01018) | 38.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.02% (0.01018) | 36.86th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.02% (0.01018) | 19.50th | v2 (v2022.01.01) |
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=780568 x_refsource_MISCMailing ListThird Party Advisory
- https://github.com/capnproto/capnproto/blob/master/security-advisories/2015-03-05-0-c%2B%2B-addl-cpu-amplification.md x_refsource_CONFIRMThird Party Advisory
- https://github.com/capnproto/capnproto/commit/80149744bdafa3ad4eedc83f8ab675e27baee868 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=780568 | x_refsource_MISCMailing ListThird Party Advisory | |
| https://github.com/capnproto/capnproto/blob/master/security-advisories/2015-03-05-0-c%2B%2B-addl-cpu-amplification.md | x_refsource_CONFIRMThird Party Advisory | |
| https://github.com/capnproto/capnproto/commit/80149744bdafa3ad4eedc83f8ab675e27baee868 | x_refsource_CONFIRMThird Party Advisory |
Change history (0)
No recorded changes yet.