CVE-2020-6856 Explained : Impact and Mitigation

An XML External Entity (XEE) vulnerability in the JOC Cockpit component of SOS JobScheduler 1.12 and 1.13.2 allows attackers to read files from the server via XML entity declaration.

Understanding CVE-2020-6856

This CVE involves a security vulnerability in SOS JobScheduler that could be exploited by attackers to access server files.

What is CVE-2020-6856?

This CVE identifies an XML External Entity (XEE) vulnerability in the JOC Cockpit component of SOS JobScheduler versions 1.12 and 1.13.2. Attackers can exploit this flaw to read files from the server by using entity declarations in XML documents that define run-time settings.

The Impact of CVE-2020-6856

The vulnerability allows unauthorized access to sensitive server files, potentially leading to data breaches and unauthorized information disclosure.

Technical Details of CVE-2020-6856

This section provides more technical insights into the vulnerability.

Vulnerability Description

The XEE vulnerability in SOS JobScheduler's JOC Cockpit component enables attackers to retrieve server files through XML entity declarations.

Affected Systems and Versions

SOS JobScheduler versions 1.12 and 1.13.2 are affected by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by inserting malicious entity declarations into XML documents used for defining job and order run-time settings.

Mitigation and Prevention

Protecting systems from CVE-2020-6856 requires immediate actions and long-term security measures.

Immediate Steps to Take

Apply security patches provided by the vendor promptly.
Restrict access to the JOC Cockpit component to authorized personnel only.
Monitor server logs for any suspicious activities.

Long-Term Security Practices

Regularly update and patch software to prevent known vulnerabilities.
Conduct security audits and penetration testing to identify and address potential weaknesses.
Educate staff on secure coding practices and the importance of data protection.
Implement network segmentation to limit the impact of potential breaches.

Patching and Updates

Stay informed about security updates and patches released by SOS JobScheduler.
Regularly check for new vulnerability disclosures and apply relevant patches to mitigate risks.