VDB-100865 · CVE-2017-3213 · BID 98308

Think Mutual Bank Mobile Banking 3.1.5 on iOS X.509 Certificate Validation certificate validation

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.7$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Think Mutual Bank Mobile Banking 3.1.5 on iOS. The affected element is an unknown function of the component X.509 Certificate Validation. The manipulation leads to certificate validation. This vulnerability is referenced as CVE-2017-3213. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Think Mutual Bank Mobile Banking 3.1.5 on iOS (Banking Software). This issue affects some unknown functionality of the component X.509 Certificate Validation. The manipulation with an unknown input leads to a certificate validation vulnerability. Using CWE to declare the problem leads to CWE-295. The product does not validate, or incorrectly validates, a certificate. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

The Think Mutual Bank Mobile Banking app 3.1.5 for iOS does not verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.

The bug was discovered 05/04/2017. The weakness was published 05/05/2017 by Will Strafach with verify.ly (Website). The advisory is shared at kb.cert.org. The identification of this vulnerability is CVE-2017-3213 since 12/05/2016. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1587.003 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 98308†). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.7

VulDB Base Score: 5.6
VulDB Temp Score: 5.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.9
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Certificate validation
CWE: CWE-295 / 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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/05/2016 🔍
05/04/2017 +150 days 🔍
05/04/2017 +0 days 🔍
05/05/2017 +1 days 🔍
05/05/2017 +0 days 🔍
05/05/2017 +0 days 🔍
09/23/2020 +1237 days 🔍

Sourcesinfo

Advisory: kb.cert.org
Researcher: Will Strafach
Organization: verify.ly
Status: Not defined

CVE: CVE-2017-3213 (🔍)
GCVE (CVE): GCVE-0-2017-3213
GCVE (VulDB): GCVE-100-100865
SecurityFocus: 98308 - Think Mutual Bank Mobile Banking App SSL Certificate Validation Security Bypass Vulnerability
OSVDB: - CVE-2017-3213 - Think Mutual Bank - Think Mutual Bank Mobile Banking App - Medium

Entryinfo

Created: 05/05/2017 15:49
Updated: 09/23/2020 22:37
Changes: 05/05/2017 15:49 (65), 09/23/2020 22:37 (2)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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