CVE-2019-13629
Medium
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.
SeverityMedium
CVSS5.9
Exploit probability—
ProductMatrixssl
PublishedOct 3, 2019
First seenOct 3, 2019
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| matrixssl matrixssl | v ≤ 4.2.1 | — |
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