CVE-2017-5918 : Security Advisory and Response
Learn about CVE-2017-5918 affecting the BCR Movil app 3.7 for iOS. Understand the vulnerability allowing man-in-the-middle attacks due to improper SSL certificate verification.
The BCR Movil app 3.7 for iOS, provided by the Banco de Costa Rica, has a vulnerability that allows man-in-the-middle attacks due to improper verification of X.509 certificates from SSL servers.
Understanding CVE-2017-5918
This CVE entry describes a security issue in the BCR Movil app 3.7 for iOS that could lead to unauthorized access to sensitive data.
What is CVE-2017-5918?
The vulnerability in the BCR Movil app 3.7 for iOS arises from the lack of proper verification of X.509 certificates from SSL servers. This flaw enables attackers to execute man-in-the-middle attacks using fraudulent certificates, potentially compromising sensitive information.
The Impact of CVE-2017-5918
The vulnerability allows attackers to intercept communication between the app and servers, potentially gaining access to sensitive data such as login credentials, financial information, or personal details.
Technical Details of CVE-2017-5918
The technical aspects of the CVE-2017-5918 vulnerability are as follows:
Vulnerability Description
The BCR Movil app 3.7 for iOS does not adequately verify X.509 certificates from SSL servers, exposing users to man-in-the-middle attacks.
Affected Systems and Versions
- Product: BCR Movil app 3.7 for iOS
- Vendor: Banco de Costa Rica
- Version: Not specified
Exploitation Mechanism
Attackers can exploit this vulnerability by using fraudulent certificates to intercept communication between the app and SSL servers, allowing them to eavesdrop on sensitive data.
Mitigation and Prevention
To address CVE-2017-5918 and enhance security, consider the following steps:
Immediate Steps to Take
- Avoid using the BCR Movil app 3.7 for iOS on unsecured networks.
- Regularly check for updates or patches from the app vendor.
Long-Term Security Practices
- Use VPNs or secure networks when accessing sensitive information.
- Educate users on recognizing SSL certificate warnings to prevent potential attacks.
Patching and Updates
- Install updates or patches provided by the Banco de Costa Rica for the BCR Movil app to fix the certificate verification issue.