Sandstorm Cap'n Proto before 0.5.3.1 allows remote crashes related to a compiler optimization
Published Apr 17, 2017
7.5
HIGHCVSS 3.0
EPSS 1.84%
Description
Sandstorm Cap'n Proto before 0.5.3.1 allows remote crashes related to a compiler optimization. A remote attacker can trigger a segfault in a 32-bit libcapnp application because Cap'n Proto relies on pointer arithmetic calculations that overflow. An example compiler with optimization that elides a bounds check in such calculations is Apple LLVM version 8.1.0 (clang-802.0.41). The attack vector is a crafted far pointer within a 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.
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:P
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 v2
- EPSS v3
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v5
Table of values (15 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.84% (0.01839) | 78.19th | v5 (v2026.06.15) |
| Jul 14, 2026 | 1.84% (0.01839) | 76.48th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.20% (0.00196) | 57.56th | v3 (v2023.03.01) |
| Apr 25, 2024 | 0.20% (0.00196) | 56.57th | v3 (v2023.03.01) |
| Mar 15, 2024 | 0.18% (0.00181) | 54.25th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.16% (0.00163) | 51.70th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.24% (0.00245) | 60.65th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.05% (0.01055) | 52.13th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.05% (0.01055) | 50.47th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.05% (0.01055) | 48.43th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.05% (0.01055) | 27.52th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.52% (0.00523) | 12.55th | v1 |
| Jan 6, 2022 | 0.52% (0.00523) | 12.10th | v1 |
| Sep 1, 2021 | 0.52% (0.00523) | 32.27th | v1 |
| Apr 14, 2021 | 0.52% (0.00523) | 0.00th | v1 |
References (1)
- https://github.com/sandstorm-io/capnproto/blob/master/security-advisories/2017-04-17-0-apple-clang-elides-bounds-check.md x_refsource_CONFIRMThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://github.com/sandstorm-io/capnproto/blob/master/security-advisories/2017-04-17-0-apple-clang-elides-bounds-check.md | x_refsource_CONFIRMThird Party Advisory |
Change history (0)
No recorded changes yet.