ARM mbed TLS up to 1.3.20/2.1.8 X.509 Certificate improper authentication

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability has been found in ARM mbed TLS up to 1.3.20/2.1.8 and classified as critical. Affected by this issue is some unknown functionality of the component X.509 Certificate. This manipulation causes improper authentication. This vulnerability is tracked as CVE-2017-14032. The attack is possible to be carried out remotely. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in ARM mbed TLS up to 1.3.20/2.1.8 and classified as critical. Affected by this vulnerability is an unknown part of the component X.509 Certificate. The manipulation with an unknown input leads to a improper authentication vulnerability. The CWE definition for the vulnerability is CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

The bug was discovered 08/28/2017. The weakness was disclosed 08/30/2017 (Website). The advisory is shared at bugs.debian.org. This vulnerability is known as CVE-2017-14032 since 08/30/2017. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 103096 (Debian DSA-3967-1 : mbedtls - security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 170452 (OpenSUSE Security Update for mbedtls (openSUSE-SU-2017:2736-1)).

Upgrading to version 1.3.21 or 2.1.9 eliminates this vulnerability. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (103096). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.2
VulDB Meta Temp Score: 7.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.1
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 103096
Nessus Name: Debian DSA-3967-1 : mbedtls - security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 53376
OpenVAS Name: Debian Security Advisory DSA 3967-1 (mbedtls - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: ARM mbed TLS 1.3.21/2.1.9
Patch: github.com

Timelineinfo

08/28/2017 🔍
08/30/2017 +2 days 🔍
08/30/2017 +0 days 🔍
08/30/2017 +0 days 🔍
08/31/2017 +1 days 🔍
09/08/2017 +8 days 🔍
09/11/2017 +3 days 🔍
06/05/2026 +3189 days 🔍

Sourcesinfo

Advisory: 31458a18788b0cf0b722acda9bb2f2fe13a3fb32
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-14032 (🔍)
GCVE (CVE): GCVE-0-2017-14032
GCVE (VulDB): GCVE-100-105997

OVAL: 🔍

Entryinfo

Created: 08/31/2017 10:31
Updated: 06/05/2026 22:13
Changes: 08/31/2017 10:31 (68), 11/12/2019 09:37 (9), 12/27/2022 10:45 (5), 06/05/2026 22:13 (17)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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