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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
5.9 MEDIUM
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
mitreCNA
---
---
CVEADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 50%
VendorProductVersion
matrixsslmatrixssl
𝑥
≤ 4.2.1
𝑥
= Vulnerable software versions
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
matrixssl
disco
dne
bionic
dne
xenial
dne
trusty
dne
Common Weakness Enumeration
References
http://www.openwall.com/lists/oss-security/2019/10/02/2
https://eprint.iacr.org/2011/232.pdf
https://minerva.crocs.fi.muni.cz/
https://tches.iacr.org/index.php/TCHES/article/view/7337
http://www.openwall.com/lists/oss-security/2019/10/02/2
https://eprint.iacr.org/2011/232.pdf
https://minerva.crocs.fi.muni.cz/
https://tches.iacr.org/index.php/TCHES/article/view/7337