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CVE-2019-16910

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Date: September 26, 2019

Arm Mbed TLS before 2.19.0 and Arm Mbed Crypto before 2.0.0, when deterministic ECDSA is enabled, use an RNG with insufficient entropy for blinding, which might allow an attacker to recover a private key via side-channel attacks if a victim signs the same message many times. (For Mbed TLS, the fix is also available in versions 2.7.12 and 2.16.3.)

Language: C

Severity Score

Related Resources (14)

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CSFFOROD6IVLADZHNJC2LPDV7FQRP7XB/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CGSKQSGR5SOBRBXDSSPTCDSBB5K3GMPF/
https://nvd.nist.gov/vuln/detail/CVE-2019-16910
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PEHHH2DOBXB25CAU3Q6E66X723VAYTB5/
https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2019-10
https://security-tracker.debian.org/tracker/CVE-2019-16910
https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CGSKQSGR5SOBRBXDSSPTCDSBB5K3GMPF/
https://security.alpinelinux.org/vuln/CVE-2019-16910
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CSFFOROD6IVLADZHNJC2LPDV7FQRP7XB/
https://github.com/ARMmbed/mbedtls/commit/33f66ba6fd234114aa37f0209dac031bb2870a9b
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PEHHH2DOBXB25CAU3Q6E66X723VAYTB5/
https://github.com/ARMmbed/mbedtls/commit/298a43a77ec0ed2c19a8c924ddd8571ef3e65dfd
https://www.mend.io/vulnerability-database/CVE-2019-16910

Severity Score

Weakness Type (CWE)

Information Leak / Disclosure

CWE-200

Insufficient Information

NVD-CWE-noinfo

Top Fix

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Upgrade Version

Upgrade to version Mbed TLS-2.7.12,Mbed-2.16.3,Mbed TLS-2.19.0;Mbed Crypto-2.0.0

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): NONE
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): HIGH
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): NONE
Availability (A): NONE
Additional information:

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