CVE-2020-6958 : Security Advisory and Response

An XXE vulnerability in JnlpSupport in Yet Another Java Service Wrapper (YAJSW) 12.14, as used in NSA Ghidra and other products, allows attackers to exfiltrate data from remote hosts and potentially cause denial-of-service.

Understanding CVE-2020-6958

This CVE involves an XML External Entity (XXE) vulnerability in YAJSW, impacting NSA Ghidra and other related products.

What is CVE-2020-6958?

CVE-2020-6958 is an XXE vulnerability in the JnlpSupport component of YAJSW 12.14, which could be exploited by malicious actors to extract data from remote servers and potentially disrupt services.

The Impact of CVE-2020-6958

The vulnerability poses a significant risk as it allows unauthorized access to sensitive data and the potential for denial-of-service attacks on affected systems.

Technical Details of CVE-2020-6958

This section provides more in-depth technical insights into the vulnerability.

Vulnerability Description

The XXE vulnerability in JnlpSupport in YAJSW 12.14 enables threat actors to retrieve data from remote hosts, compromising the confidentiality and integrity of the information.

Affected Systems and Versions

Yet Another Java Service Wrapper (YAJSW) 12.14
NSA Ghidra and other products

Exploitation Mechanism

The vulnerability can be exploited by crafting malicious XML payloads to trigger the XXE flaw in JnlpSupport, leading to data exfiltration and potential service disruptions.

Mitigation and Prevention

Protecting systems from CVE-2020-6958 requires immediate actions and long-term security measures.

Immediate Steps to Take

Apply security patches or updates provided by the software vendors to address the vulnerability promptly.
Implement network segmentation to restrict access to critical systems.
Monitor and analyze network traffic for any suspicious activities that could indicate exploitation attempts.

Long-Term Security Practices

Conduct regular security assessments and penetration testing to identify and remediate vulnerabilities proactively.
Educate personnel on secure coding practices and the risks associated with XXE vulnerabilities.
Keep software and systems up to date with the latest security patches and configurations.

Patching and Updates

Regularly check for security advisories from YAJSW, NSA Ghidra, and other affected vendors to apply patches and updates that mitigate the XXE vulnerability.