The ECDSA implementation of the Elliptic package generates incorrect signatures if an interim value of 'k' (as computed based on step 3.2 of RFC 6979 https://datatracker.ietf.org/doc/html/rfc6979 ) has leading zeros and is susceptible to cryptanalysis, which can lead to secret key exposure. This happens, because the byte-length of 'k' is incorrectly computed, resulting in its getting truncated during the computation. Legitimate transactions or communications will be broken as a result. Furthermore, due to the nature of the fault, attackers could–under certain conditions–derive the secret key, if they could get their hands on both a faulty signature generated by a vulnerable version of Elliptic and a correct signature for the same inputs.
This issue affects all known versions of Elliptic (at the time of writing, versions less than or equal to 6.6.1).
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Affected Vendors & Products
References
History
Fri, 09 Jan 2026 13:30:00 +0000
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Elliptic Project
Elliptic Project elliptic |
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Elliptic Project
Elliptic Project elliptic |
Thu, 08 Jan 2026 22:15:00 +0000
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ssvc
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Thu, 08 Jan 2026 21:15:00 +0000
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| Description | The ECDSA implementation of the Elliptic package generates incorrect signatures if an interim value of 'k' (as computed based on step 3.2 of RFC 6979 https://datatracker.ietf.org/doc/html/rfc6979 ) has leading zeros and is susceptible to cryptanalysis, which can lead to secret key exposure. This happens, because the byte-length of 'k' is incorrectly computed, resulting in its getting truncated during the computation. Legitimate transactions or communications will be broken as a result. Furthermore, due to the nature of the fault, attackers could–under certain conditions–derive the secret key, if they could get their hands on both a faulty signature generated by a vulnerable version of Elliptic and a correct signature for the same inputs. This issue affects all known versions of Elliptic (at the time of writing, versions less than or equal to 6.6.1). | |
| Title | Elliptic Cryptanalysis vulnerability when `k` has leading zeros | |
| Weaknesses | CWE-1240 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: HeroDevs
Published:
Updated: 2026-01-08T21:22:55.144Z
Reserved: 2025-12-10T22:37:46.175Z
Link: CVE-2025-14505
Updated: 2026-01-08T21:22:52.267Z
Status : Received
Published: 2026-01-08T21:15:42.023
Modified: 2026-01-08T21:15:42.023
Link: CVE-2025-14505
No data.
OpenCVE Enrichment
Updated: 2026-01-09T13:24:18Z