CVE-2020-35740 : What You Need to Know

HGiga MailSherlock has a vulnerability that allows attackers to execute XSS attacks due to improper validation of specific URL parameters.

Understanding CVE-2020-35740

This CVE involves a Cross-site Scripting (XSS) vulnerability in HGiga MailSherlock, impacting certain versions of the product.

What is CVE-2020-35740?

CVE-2020-35740 is a high-severity vulnerability in HGiga MailSherlock that enables attackers to inject JavaScript code through specific URL parameters, potentially leading to XSS attacks.

The Impact of CVE-2020-35740

CVSS Base Score: 7 (High)
Attack Vector: Network
Confidentiality Impact: High
Integrity Impact: Low
Availability Impact: Low
This vulnerability does not require privileges for exploitation and has a high severity impact on confidentiality.

Technical Details of CVE-2020-35740

This section provides detailed technical information about the vulnerability.

Vulnerability Description

HGiga MailSherlock fails to properly validate specific URL parameters, allowing malicious actors to inject JavaScript code for XSS attacks.

Affected Systems and Versions

Affected Platforms:
iSherlock-user-4.5
iSherlock-antispam-4.5
Affected Product:
MailSherlock MSR45/SSR45
Vulnerable Versions:
MailSherlock MSR45/SSR45 less than version 120 for iSherlock-user-4.5
MailSherlock MSR45/SSR45 less than version 133 for iSherlock-antispam-4.5

Exploitation Mechanism

The vulnerability can be exploited remotely by sending crafted requests containing malicious JavaScript code through specific URL parameters.

Mitigation and Prevention

Protect your systems from CVE-2020-35740 by following these mitigation strategies.

Immediate Steps to Take

Update MailSherlock MSR45/SSR45 Module to:
iSherlock-user-4.5-120.i386.rpm
iSherlock-antispam-4.5-133.i386.rpm

Long-Term Security Practices

Regularly monitor and audit URL parameter validations in web applications.
Implement input validation mechanisms to sanitize user inputs and prevent XSS vulnerabilities.

Patching and Updates

Apply security patches provided by HGiga promptly to address the XSS vulnerability in MailSherlock MSR45/SSR45.