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The ECDSA signature implementation in ecdsa.c in Arm Mbed...

Moderate severity Unreviewed Published May 24, 2022 to the GitHub Advisory Database • Updated Jan 27, 2023

Package

No package listed— Suggest a package

Affected versions

Unknown

Patched versions

Unknown

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.

References

Published by the National Vulnerability Database Jan 23, 2020
Published to the GitHub Advisory Database May 24, 2022
Last updated Jan 27, 2023

Severity

Moderate
4.7
/ 10

CVSS base metrics

Attack vector
Local
Attack complexity
High
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Weaknesses

CVE ID

CVE-2019-18222

GHSA ID

GHSA-fpgh-hvp5-cqc2

Source code

No known source code

Dependabot alerts are not supported on this advisory because it does not have a package from a supported ecosystem with an affected and fixed version.

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