A cryptographic cache-based side channel in the RSA implementation in Botan before 1.10.17, and 1.11.x and 2.x before 2.3.0, allows a local attacker to recover information about RSA secret keys, as demonstrated by CacheD
Published Sep 26, 2017
5.5
MEDIUMCVSS 3.1
EPSS 0.32%
Description
A cryptographic cache-based side channel in the RSA implementation in Botan before 1.10.17, and 1.11.x and 2.x before 2.3.0, allows a local attacker to recover information about RSA secret keys, as demonstrated by CacheD. This occurs because an array is indexed with bits derived from a secret key.
Affected products
No data.
Configuration 1
- ≤ 1.10.16
- 1.11.0
- 1.11.1
- 1.11.2
- 1.11.3
- 1.11.4
- 1.11.5
- 1.11.6
- 1.11.7
- 1.11.8
- 1.11.9
- 1.11.10
- 1.11.11
- 1.11.12
- 1.11.13
- 1.11.14
- 1.11.15
- 1.11.16
- 1.11.17
- 1.11.18
- 1.11.19
- 1.11.20
- 1.11.21
- 1.11.22
- 1.11.23
- 1.11.24
- 1.11.25
- 1.11.26
- 1.11.27
- 1.11.28
- 1.11.33
- 1.11.34
- 2.0.0
- 2.0.1
- 2.1.0
- 2.2.0
Configuration 2
- 9.0
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:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
No CVSS v3.0 score for this CVE.
AV:L/AC:L/Au:N/C:P/I:N/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
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (8 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.32% (0.00318) | 22.43th | v5 (v2026.06.15) |
| Sep 20, 2026 | 0.32% (0.00318) | 24.98th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.04% (0.00042) | 5.06th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 5.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00890) | 30.33th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.89% (0.00890) | 12.04th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.44% (0.00444) | 10.84th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.33% (0.00332) | 0.00th | v1 |
No CWE recorded.
References (3)
- https://github.com/randombit/botan/issues/1222 x_refsource_MISCIssue TrackingThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/11/msg00006.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://www.usenix.org/conference/usenixsecurity17/technical-sessions/presentation/wang-shuai x_refsource_MISCThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://github.com/randombit/botan/issues/1222 | x_refsource_MISCIssue TrackingThird Party Advisory | |
| https://lists.debian.org/debian-lts-announce/2021/11/msg00006.html | mailing-listx_refsource_MLISTMailing ListThird Party Advisory | |
| https://www.usenix.org/conference/usenixsecurity17/technical-sessions/presentation/wang-shuai | x_refsource_MISCThird Party Advisory |
Change history (0)
No recorded changes yet.