5.9

CVE-2019-13629

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Matrixssl ≫ Matrixssl Version <= 4.2.1
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 1.24% 0.653
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.9 2.2 3.6
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
nvd@nist.gov 4.3 8.6 2.9
AV:N/AC:M/Au:N/C:P/I:N/A:N
CWE-203 Observable Discrepancy

The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor.

CWE-327 Use of a Broken or Risky Cryptographic Algorithm

The product uses a broken or risky cryptographic algorithm or protocol.

http://www.openwall.com/lists/oss-security/2019/10/02/2
Third Party Advisory
Mailing List
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