CVE-2019-18222

Description

The ECDSA signature implementation in ecdsa.c in Arm Mbed Crypto 2.1 and Mbed TLS through 2.19.1 does not reduce the blinded scalar before computing the inverse, which allows a local attacker to recover the private key via side-channel attacks.

Category

4.7
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.06%
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory mbed.org Vendor Advisory mbed.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://tls.mbed.org/tech-updates/security-advisories vendor advisory
https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2019-12 vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NGDACU65MYZXXVPQP2EBHUJGOR4RWLVY/ mailing list third party advisory vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A3GWQNONS7GRORXZJ7MOJFUEJ2ZJ4OUW/ mailing list third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2019-18222?
CVE-2019-18222 has been scored as a medium severity vulnerability.
How to fix CVE-2019-18222?
To fix CVE-2019-18222, 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-2019-18222 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2019-18222 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.
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