Debian DSA-3967-1 : mbedtls - security update

high Nessus Plugin ID 103096

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Synopsis

The remote Debian host is missing a security-related update.

Description

An authentication bypass vulnerability was discovered in mbed TLS, a lightweight crypto and SSL/TLS library, when the authentication mode is configured as 'optional'. A remote attacker can take advantage of this flaw to mount a man-in-the-middle attack and impersonate an intended peer via an X.509 certificate chain with many intermediates.

Solution

Upgrade the mbedtls packages.

For the stable distribution (stretch), this problem has been fixed in version 2.4.2-1+deb9u1.

Plugin Details

Severity: High

ID: 103096

File Name: debian_DSA-3967.nasl

Version: 3.5

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 9/11/2017

Updated: 1/4/2021

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS v3

Risk Factor: High

Base Score: 8.1

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:mbedtls, cpe:/o:debian:debian_linux:9.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Patch Publication Date: 9/8/2017

Reference Information

CVE: CVE-2017-14032

DSA: 3967

Detections

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