CVE-2020-1766 Explained : Impact and Mitigation

CVE-2020-1766, assigned by OTRS, addresses an issue in OTRS that could lead to the execution of malicious JavaScript under certain circumstances.

Understanding CVE-2020-1766

This CVE addresses the improper handling of uploaded inline images in OTRS, potentially resulting in the execution of malicious scripts.

What is CVE-2020-1766?

The vulnerability allows attackers to force a user's browser to execute malicious JavaScript via specially crafted SVG files.

The Impact of CVE-2020-1766

The vulnerability affects ((OTRS)) Community Edition 5.0.x versions 5.0.39 and earlier, 6.0.x versions 6.0.24 and earlier, and OTRS 7.0.x versions 7.0.13 and earlier.

Technical Details of CVE-2020-1766

This section covers in-depth technical details of CVE-2020-1766.

Vulnerability Description

Due to improper handling of uploaded images, attackers can exploit a vulnerability to execute malicious JavaScript in a user's browser.

Affected Systems and Versions

Vendor: OTRS AG
Products Affected: ((OTRS)) Community Edition, OTRS
Vulnerable Versions:
((OTRS)) Community Edition 5.0.x version 5.0.39 and prior
((OTRS)) Community Edition 6.0.x version 6.0.24 and earlier
OTRS 7.0.x version 7.0.13 and earlier

Exploitation Mechanism

Attackers can exploit this vulnerability by uploading specially crafted inline images, tricking the system into executing malicious JavaScript.

Mitigation and Prevention

To address CVE-2020-1766, follow these mitigation steps:

Immediate Steps to Take

Upgrade to the latest versions: OTRS 7.0.14, ((OTRS)) Community Edition 6.0.25, ((OTRS)) Community Edition 5.0.40
Apply patches for vulnerable versions:
((OTRS)) Community Edition 6: Patch Link
((OTRS)) Community Edition 5: Patch Link

Long-Term Security Practices

Regularly update OTRS and ((OTRS)) Community Edition to the latest versions
Implement secure image handling practices to mitigate similar vulnerabilities
Conduct regular security audits and penetration testing
Educate users on safe browsing practices
Stay informed about security advisories and apply patches promptly

Patching and Updates

Stay vigilant for security updates and apply them promptly to patch vulnerabilities.