An issue was discovered in Botan 1.11.32 through 2.x before 2.6.0
Published Apr 12, 2018
7.5
HIGHCVSS 3.0
EPSS 1.36%
Description
An issue was discovered in Botan 1.11.32 through 2.x before 2.6.0. An off-by-one error when processing malformed TLS-CBC ciphertext could cause the receiving side to include in the HMAC computation exactly 64K bytes of data following the record buffer, aka an over-read. The MAC comparison will subsequently fail and the connection will be closed. This could be used for denial of service. No information leak occurs.
Affected products
No data.
- ≥ 1.11.32 · < 2.6.0
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.
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 v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.36% (0.01356) | 70.64th | v5 (v2026.06.15) |
| Sep 20, 2026 | 1.38% (0.01382) | 70.94th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.10% (0.00099) | 41.47th | v3 (v2023.03.01) |
| Jun 10, 2024 | 0.10% (0.00099) | 41.11th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.10% (0.00098) | 39.11th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.89% (0.00885) | 10.50th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.78% (0.00777) | 21.50th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.78% (0.00777) | 0.00th | v1 |
References (2)
- https://botan.randombit.net/security.html x_refsource_MISCVendor Advisory
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=7434 x_refsource_MISCIssue Tracking
| Link | Providers | Tags |
|---|---|---|
| https://botan.randombit.net/security.html | x_refsource_MISCVendor Advisory | |
| https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=7434 | x_refsource_MISCIssue Tracking |
Change history (0)
No recorded changes yet.