MEDIUM
An issue was discovered in wolfSSL before 4.3.0 in a non-default configuration where DSA is enabled
Published Dec 24, 2019
5.3
MEDIUMCVSS 3.1
EPSS 0.95%
Description
An issue was discovered in wolfSSL before 4.3.0 in a non-default configuration where DSA is enabled. DSA signing uses the BEEA algorithm during modular inversion of the nonce, leading to a side-channel attack against the nonce.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
5.3 MEDIUM NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact Low
Integrity Impact None
Availability Impact None
No CVSS v3.0 score for this CVE.
4.3 MEDIUM NVD
AV:N/AC:M/Au:N/C:P/I:N/A:N
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact Partial
Integrity Impact None
Availability Impact None
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
0.95% 0.00955
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
EPSS probability 0.00955
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 (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 0.95% (0.00955) | 60.06th | v5 (v2026.06.15) |
| Sep 20, 2026 | 0.95% (0.00955) | 59.86th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.07% (0.00071) | 31.29th | v3 (v2023.03.01) |
| Jun 15, 2024 | 0.07% (0.00071) | 30.87th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.07% (0.00071) | 28.87th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.89% (0.00885) | 24.24th | v2 (v2022.01.01) |
| Feb 4, 2022 | 4.50% (0.04499) | 74.08th | v2 (v2022.01.01) |
| Feb 3, 2022 | 2.74% (0.02742) | 63.06th | v1 |
| Jan 6, 2022 | 2.74% (0.02742) | 62.72th | v1 |
| Jan 5, 2022 | 0.62% (0.00624) | 46.35th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.62% (0.00624) | 0.00th | v1 |
Weaknesses (0)
No CWE recorded.
References (2)
- https://github.com/wolfSSL/wolfssl/commit/7e391f0fd57f2ef375b1174d752a56ce34b2b190 x_refsource_MISCPatchThird Party Advisory
- https://github.com/wolfSSL/wolfssl/releases/tag/v4.3.0-stable x_refsource_MISCRelease NotesThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://github.com/wolfSSL/wolfssl/commit/7e391f0fd57f2ef375b1174d752a56ce34b2b190 | x_refsource_MISCPatchThird Party Advisory | |
| https://github.com/wolfSSL/wolfssl/releases/tag/v4.3.0-stable | x_refsource_MISCRelease NotesThird Party Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Dec 24, 2019
Updated Aug 5, 2024
Reserved Dec 24, 2019
Link CVE-2019-19963
CISA Vulnrichment
Updated n/a