CVE-2024-1544
- Source
- https://cve.org/CVERecord?id=CVE-2024-1544
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-1544.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2024-1544
- Downstream
- Published
- 2024-08-27T18:44:52.770Z
- Modified
- 2026-07-16T03:46:32.933864909Z
- Severity
-
- 4.1 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
- Summary
- ECDSA nonce bias caused by truncation
- Details
-
Generating the ECDSA nonce k samples a random number r and then truncates this randomness with a modular reduction mod n where n is the order of the elliptic curve. Meaning k = r mod n. The division used during the reduction estimates a factor qe by dividing the upper two digits (a digit having e.g. a size of 8 byte) of r by the upper digit of n and then decrements qe in a loop until it has the correct size. Observing the number of times q_e is decremented through a control-flow revealing side-channel reveals a bias in the most significant bits of k. Depending on the curve this is either a negligible bias or a significant bias large enough to reconstruct k with lattice reduction methods. For SECP160R1, e.g., we find a bias of 15 bits.
- Database specific
{ "cna_assigner": "wolfSSL", "cwe_ids": [ "CWE-203" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/1xxx/CVE-2024-1544.json" }- References
Affected packages
Git / github.com/wolfssl/wolfssl
Affected ranges
- Type
- GIT
- Repo
- https://github.com/wolfssl/wolfssl
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed
- Database specific
{ "cpe": "cpe:2.3:a:wolfssl:wolfssl:*:*:*:*:*:*:*:*", "source": [ "AFFECTED_FIELD", "CPE_RANGE", "REFERENCES" ], "extracted_events": [ { "introduced": "0" }, { "last_affected": "5.6.4" }, { "fixed": "5.7.2" } ] }