CVE-2019-18222

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.

CVSS v3.0 4.7 MEDIUM
CVSS v2.0 1.9 LOW

4.7^/10

CVSS v3.0 : MEDIUM

Vector :

Exploitability : 1.0 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

1.9^/10

CVSS v2.0 : LOW

Vector : AV:L/AC:M/Au:N/C:P/I:N/A:N

Exploitability : 3.4 / Impact : 2.9

Access Vector LOCAL

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

References

Link	Resource
https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2019-12	Vendor Advisory
https://tls.mbed.org/tech-updates/security-advisories	Vendor Advisory
https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A3GWQNONS7GRORXZJ7MOJFUEJ2ZJ4OUW/	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NGDACU65MYZXXVPQP2EBHUJGOR4RWLVY/	Mailing List Third Party Advisory

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Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:arm:mbed_tls::::::::
	cpe:2.3:a:arm:mbed_tls::::::::
	cpe:2.3:a:arm:mbed_tls::::::::
	cpe:2.3:a:arm:mbed_crypto::::::::

Configuration 2 (hide)

OR	cpe:2.3:o:fedoraproject:fedora:30:::::::*
	cpe:2.3:o:fedoraproject:fedora:31:::::::*

Configuration 3 (hide)

cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

Information

Published : 2020-01-23 09:15

Updated : 2023-03-03 07:25

NVD link : CVE-2019-18222

Mitre link : CVE-2019-18222

JSON object : View

CWE

CWE-203

Observable Discrepancy

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Products Affected

arm

mbed_crypto
mbed_tls

debian

debian_linux

fedoraproject

fedora

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