CVE-2020-35741 Explained : Impact and Mitigation

HGiga MailSherlock has a vulnerability that allows attackers to execute XSS attacks by injecting JavaScript syntax on multiple login pages.

Understanding CVE-2020-35741

This CVE involves a cross-site scripting (XSS) vulnerability in HGiga MailSherlock, impacting specific versions of the MailSherlock MSR45/SSR45 product.

What is CVE-2020-35741?

CVE-2020-35741 is a high-severity vulnerability in HGiga MailSherlock that arises from inadequate validation of user parameters on various login pages, enabling attackers to perform XSS attacks.

The Impact of CVE-2020-35741

CVSS Base Score: 7 (High Severity)
Attack Vector: Network
Attack Complexity: High
Confidentiality Impact: High
Integrity Impact: Low
Availability Impact: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged

Technical Details of CVE-2020-35741

This section provides detailed technical information about the vulnerability.

Vulnerability Description

HGiga MailSherlock fails to validate user parameters on multiple login pages, 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 by injecting malicious JavaScript code into user parameters on the affected login pages, leading to XSS attacks.

Mitigation and Prevention

To address CVE-2020-35741, follow these mitigation steps:

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 update security patches
Conduct security audits and code reviews to identify and fix vulnerabilities

Patching and Updates

Apply vendor-provided patches and updates promptly to ensure the security of the MailSherlock MSR45/SSR45 module.