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.

Category

5.9
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.27%
Third-Party Advisory openwall.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://eprint.iacr.org/2011/232.pdf not applicable
https://tches.iacr.org/index.php/TCHES/article/view/7337 not applicable
http://www.openwall.com/lists/oss-security/2019/10/02/2 third party advisory mailing list
https://minerva.crocs.fi.muni.cz/ product

Frequently Asked Questions

What is the severity of CVE-2019-13629?
CVE-2019-13629 has been scored as a medium severity vulnerability.
How to fix CVE-2019-13629?
To fix CVE-2019-13629, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-13629 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2019-13629 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.