CVE-2020-4763 : Security Advisory and Response

IBM Sterling File Gateway versions 6.0.0.0 through 6.0.3.2 and 2.2.0.0 through 2.2.6.5 are affected by a vulnerability that allows attackers to obtain cookie values, potentially compromising user security.

Understanding CVE-2020-4763

This CVE involves a lack of secure attribute setting on authorization tokens or session cookies in IBM Sterling File Gateway, leading to potential cookie value exposure.

What is CVE-2020-4763?

IBM Sterling File Gateway versions 6.0.0.0 through 6.0.3.2 and 2.2.0.0 through 2.2.6.5 are impacted.
Attackers can exploit this vulnerability by sending a malicious http:// link to users or planting it on a visited site to intercept cookie values.

The Impact of CVE-2020-4763

CVSS Base Score: 4.3 (Medium Severity)
Attack Vector: Network
Confidentiality Impact: Low
User Interaction: Required
Exploit Code Maturity: Unproven

Technical Details of CVE-2020-4763

Vulnerability Description

The vulnerability in IBM Sterling File Gateway allows attackers to intercept cookie values by exploiting the lack of secure attribute setting on authorization tokens or session cookies.

Affected Systems and Versions

IBM Sterling File Gateway 6.0.0.0 through 6.0.3.2
IBM Sterling File Gateway 2.2.0.0 through 2.2.6.5

Exploitation Mechanism

Attackers can obtain cookie values by sending malicious http:// links to users or planting them on visited sites to intercept the insecure cookies.

Mitigation and Prevention

Immediate Steps to Take

Apply official fixes provided by IBM to address the vulnerability.
Educate users about the risks of clicking on unknown links.

Long-Term Security Practices

Implement secure coding practices to prevent similar vulnerabilities.
Regularly monitor and update security protocols to protect against potential threats.

Patching and Updates

Ensure all IBM Sterling File Gateway instances are updated with the latest security patches to mitigate the vulnerability.