CVE Vulnerability

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.

4.3 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8.6 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

Scope

5.9 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
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://minerva.crocs.fi.muni.cz/ Product
https://eprint.iacr.org/2011/232.pdf Not Applicable
Configurations

Configuration 1

cpe:2.3:a:matrixssl:matrixssl:*:*:*:*:*:*:*:*
Information

Published : 2019-10-03 02:15

Updated : 2021-07-21 11:39

NVD link : CVE-2019-13629

Mitre link : CVE-2019-13629

Products Affected
No products.
CWE
CWE-203

CWE-327