CVEvulnerability
CVE-2019-13629
5.9 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2019-10-03
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 5.9 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- CVSS 2.0 ([email protected])
- 4.3 MEDIUM — AV:N/AC:M/Au:N/C:P/I:N/A:N
- Weaknesses
- CWE-203, CWE-327
Description
MatrixSSL 4.2.1 and earlier contains a timing side channel in ECDSA signature generation. This allows a local or a remote attacker, able to measure the duration of hundreds to thousands of signing operations, to compute the private key used. The issue occurs because crypto/pubkey/ecc_math.c scalar multiplication leaks the bit length of the scalar.
Affected configurations
• matrixssl matrixssl (<= 4.2.1)
Related
References
- http://www.openwall.com/lists/oss-security/2019/10/02/2 Mailing List, Third Party Advisory
- https://eprint.iacr.org/2011/232.pdf Not Applicable
- https://minerva.crocs.fi.muni.cz/ Product
- https://tches.iacr.org/index.php/TCHES/article/view/7337 Not Applicable
- http://www.openwall.com/lists/oss-security/2019/10/02/2 Mailing List, Third Party Advisory
- https://eprint.iacr.org/2011/232.pdf Not Applicable
- https://minerva.crocs.fi.muni.cz/ Product
- https://tches.iacr.org/index.php/TCHES/article/view/7337 Not Applicable