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CVE-2019-13629

Published: Oct 3, 2019

Modified: Aug 4, 2024

PUBLISHED

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.

Vendor	Product	Versions
n/a	n/a	affected `n/a`

References

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

x_refsource_MISC

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

x_refsource_MISC

[oss-security] 20191002 Minerva: ECDSA key recovery from bit-length leakage

mailing-list

x_refsource_MLIST

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

x_refsource_MISC

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