CVE-2019-13629

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.

References

https://tches.iacr.org/index.php/TCHES/article/view/7337

https://minerva.crocs.fi.muni.cz/

https://eprint.iacr.org/2011/232.pdf

http://www.openwall.com/lists/oss-security/2019/10/02/2

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

EPSS