4.7

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.

Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Arm ≫ Mbed Crypto Version < 3.0.0
Arm ≫ Mbed Tls Version < 2.7.13
Arm ≫ Mbed Tls Version >= 2.8.0 < 2.16.4
Arm ≫ Mbed Tls Version >= 2.17.0 < 2.20.0
Fedoraproject ≫ Fedora Version30
Fedoraproject ≫ Fedora Version31
Debian ≫ Debian Linux Version10.0
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.06% 0.19
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 4.7 1 3.6
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
nvd@nist.gov 1.9 3.4 2.9
AV:L/AC:M/Au:N/C:P/I:N/A:N
CWE-203 Observable Discrepancy

The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not.