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CVE-2017-14032

ARM mbed TLS before 1.3.21 and 2.x before 2.1.9, if optional authentication is configured, allows...

8.1 HighFix available

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.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
High
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

1.49%Down 0.1 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 8.1

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.

Record
CVE-2017-14032
CVSS 3.0
8.1 HighCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0
6.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:P
Weakness
CWE-287
Updated
2026-11-02
CVE List No score

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.

Record
CVE-2017-14032
Updated
2026-11-02
EUVDEUVD-2017-5547 No score

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.

Record
EUVD-2017-5547
Updated
2026-11-03
GitHub AdvisoriesGHSA-6v28-r64j-r4w6 8.1

ARM mbed TLS before 1.3.21 and 2.x before 2.1.9, if optional authentication is configured, allows...

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.

Record
GHSA-6v28-r64j-r4w6
CVSS 3.0
8.1 HighCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-287
Updated
2026-11-02
OSVALPINE-CVE-2017-14032 8.1

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.

Record
ALPINE-CVE-2017-14032
CVSS 3.0
8.1 HighCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-03
OSV 8.1

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.

Record
CVE-2017-14032
CVSS 3.0
8.1 HighCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
Show 7 moreShow less
OSVDEBIAN-CVE-2017-14032 8.1

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.

Record
DEBIAN-CVE-2017-14032
CVSS 3.0
8.1 HighCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2017-14032 8.1

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.

Record
UBUNTU-CVE-2017-14032
CVSS 3.0
8.1 HighCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVMGASA-2018-0038 No score

Updated mbedtls packages fix security vulnerability

ARM mbed TLS before 1.3.21, 2.1.x before 2.1.9 and 2.x before 2.6.0, if optional authentication is configured, allows remote attackers to bypass peer authentication via an X.509 certificate chain with many intermediates (CVE-2017-14032).

Record
MGASA-2018-0038
Updated
2026-11-02
OSVopenSUSE-SU-2017:2731-1 No score

Security update for mbedtls

This update for mbedtls fixes the following issues:

  • CVE-2017-14032: Possible authentication bypass of peer based authentication when auth mode is configured as 'optional' (boo#1056544).
Record
openSUSE-SU-2017:2731-1
Updated
2026-11-02
OSVopenSUSE-SU-2017:2736-1 No score

Security update for mbedtls

This update for mbedtls fixes the following issues:

  • CVE-2017-14032: Possible authentication bypass of peer based authentication when auth mode is configured as 'optional' (boo#1056544).
Record
openSUSE-SU-2017:2736-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:11043-1 No score

libmbedcrypto7-2.27.0-1.2 on GA media

These are all security issues fixed in the libmbedcrypto7-2.27.0-1.2 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:11043-1
Updated
2026-11-02
OSVopenSUSE-SU-2026:11119-1 No score

libeverest-3.6.6-1.1 on GA media

These are all security issues fixed in the libeverest-3.6.6-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2026:11119-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
mbedtls
Alpine:v3.10
 before 2.6.0-r0
2.6.0-r0
mbedtls
Alpine:v3.11
 before 2.6.0-r0
2.6.0-r0
mbedtls
Alpine:v3.12
 before 2.6.0-r0
2.6.0-r0
mbedtls
Alpine:v3.13
 before 2.6.0-r0
2.6.0-r0
mbedtls
Alpine:v3.14
 before 2.6.0-r0
2.6.0-r0
mbedtls
Alpine:v3.15
 before 2.6.0-r0
2.6.0-r0
mbedtls
Alpine:v3.16
 before 2.6.0-r0
2.6.0-r0
mbedtls
Alpine:v3.17
 before 2.6.0-r0
2.6.0-r0
mbedtls
Alpine:v3.18
 before 2.6.0-r0
2.6.0-r0
mbedtls
Alpine:v3.19
 before 2.6.0-r0
2.6.0-r0
Show 24 moreShow less
Affected packages
PackageAffectedFixed
mbedtls
Alpine:v3.20
 before 2.6.0-r0
2.6.0-r0
mbedtls
Alpine:v3.21
 before 2.6.0-r0
2.6.0-r0
mbedtls
Alpine:v3.22
 before 2.6.0-r0
2.6.0-r0
mbedtls
Alpine:v3.23
 before 2.6.0-r0
2.6.0-r0
mbedtls
Alpine:v3.24
 before 2.6.0-r0
2.6.0-r0
mbedtls
Alpine:v3.7
 before 2.6.0-r0
2.6.0-r0
mbedtls
Alpine:v3.8
 before 2.6.0-r0
2.6.0-r0
mbedtls
Alpine:v3.9
 before 2.6.0-r0
2.6.0-r0
mbedtls2
Alpine:v3.20
 before 2.6.0-r0
2.6.0-r0
mbedtls2
Alpine:v3.21
 before 2.6.0-r0
2.6.0-r0
mbedtls2
Alpine:v3.22
 before 2.6.0-r0
2.6.0-r0
mbedtls2
Alpine:v3.23
 before 2.6.0-r0
2.6.0-r0
mbedtls2
Alpine:v3.24
 before 2.6.0-r0
2.6.0-r0
mbedtls3
Alpine:v3.24
 before 2.6.0-r0
2.6.0-r0
mbedtls
Debian:12
 before 2.6.0-1
2.6.0-1
mbedtls
Debian:13
 before 2.6.0-1
2.6.0-1
mbedtls
Debian:14
 before 2.6.0-1
2.6.0-1
mbedtls
Debian:9
 before 2.4.2-1+deb9u1, plus listed versions
2.4.2-12.4.2-1+deb9u1~bpo8+1
2.4.2-1+deb9u1
mbedtls
Mageia:5
 before 1.3.21-1.mga5
1.3.21-1.mga5
mbedtls
Mageia:6
 before 2.6.0-1.mga6
2.6.0-1.mga6
mbedtls
Ubuntu:16.04:LTS
 before 2.2.1-2ubuntu0.2, plus listed versions
2.1.2-12.2.0-12.2.1-12.2.1-22.2.1-2ubuntu0.1
2.2.1-2ubuntu0.2
mbedtls
SUSE:Package Hub 12
 before 1.3.19-8.1
1.3.19-8.1
mbedtls-2
openSUSE:Tumbleweed
From an advisory covering 5 CVEs
 before 2.27.0-1.2
2.27.0-1.2
mbedtls-3
openSUSE:Tumbleweed
From an advisory covering 14 CVEs
 before 3.6.6-1.1
3.6.6-1.1

History

History
RecordedChangedSources
affected, facts
affectedOSV
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2017-14032 is a high vulnerability (CVSS 8.1) in Arm Mbed Tls, published August 30, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.49%, the 74th percentile. Fixed in mbedtls 2.6.0-r0.

References

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