CVE-2017-17859 : Exploit Details and Defense Strategies

A vulnerability has been identified in Samsung Internet Browser 6.2.01.12 that allows remote attackers to bypass the Same Origin Policy, leading to potential UXSS attacks and the acquisition of sensitive information.

Understanding CVE-2017-17859

This CVE entry highlights a security flaw in Samsung Internet Browser version 6.2.01.12 that can be exploited by malicious actors to bypass security restrictions and perform UXSS attacks.

What is CVE-2017-17859?

The vulnerability in Samsung Internet Browser 6.2.01.12 enables remote attackers to bypass the Same Origin Policy, allowing them to conduct UXSS attacks to obtain sensitive information. The issue arises from an IFRAME element within XSLT data in a specific section of an MHTML file.

The Impact of CVE-2017-17859

The vulnerability poses a significant risk as attackers can exploit it to bypass security measures and potentially access sensitive data through UXSS attacks.

Technical Details of CVE-2017-17859

This section delves into the technical aspects of the CVE, including the vulnerability description, affected systems, and exploitation mechanism.

Vulnerability Description

The vulnerability in Samsung Internet Browser 6.2.01.12 allows remote attackers to bypass the Same Origin Policy by manipulating an IFRAME element within XSLT data in an MHTML file, leading to potential UXSS attacks.

Affected Systems and Versions

Affected Version: Samsung Internet Browser 6.2.01.12

Exploitation Mechanism

Attackers exploit the vulnerability by utilizing a specific section of an MHTML file containing an IFRAME element and JavaScript code with a document.domain value corresponding to an arbitrary URL within the file.

Mitigation and Prevention

To address CVE-2017-17859, users and organizations should take immediate steps and implement long-term security practices to enhance protection.

Immediate Steps to Take

Disable Samsung Internet Browser 6.2.01.12 if possible or limit its use to trusted websites only.
Regularly monitor for security updates and patches from the vendor.

Long-Term Security Practices

Educate users on safe browsing habits and the risks associated with untrusted websites.
Implement network-level security measures to detect and prevent similar attacks.
Consider using alternative browsers with robust security features.

Patching and Updates

Stay informed about security advisories and updates from Samsung regarding CVE-2017-17859.