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CVE-2017-14032

Published: 30 August 2017

ARM mbed TLS before 1.3.21 and 2.x before 2.1.9, if optional authentication is configured, allows remote attackers to bypass peer authentication via an X.509 certificate chain with many intermediates. NOTE: although mbed TLS was formerly known as PolarSSL, the releases shipped with the PolarSSL name are not affected.

Priority

Medium

Cvss 3 Severity Score

8.1

Score breakdown

Status

Package Release Status
mbedtls
Launchpad, Ubuntu, Debian
trusty Does not exist

upstream
Released (2.6.0-1)
xenial
Released (2.2.1-2ubuntu0.2)
zesty
Released (2.4.2-1ubuntu0.1)
polarssl
Launchpad, Ubuntu, Debian
trusty Does not exist
(trusty was not-affected)
upstream Needs triage

xenial Does not exist

zesty Does not exist

Severity score breakdown

Parameter Value
Base score 8.1
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H