CVE-2021-29764 : Exploit Details and Defense Strategies

IBM Sterling B2B Integrator versions 5.2.0.0 through 6.1.1.0 are vulnerable to stored cross-site scripting, allowing malicious users to inject arbitrary JavaScript code into the Web UI. This could potentially lead to credentials disclosure within a trusted session. It was first published on October 5, 2021. CVE ID: CVE-2021-29764.

Understanding CVE-2021-20657

This section provides an overview of the vulnerability, its impact, technical details, and mitigation strategies.

What is CVE-2021-20657?

IBM Sterling B2B Integrator versions 5.2.0.0 through 6.1.1.0 are susceptible to stored cross-site scripting. Attackers can exploit this flaw to manipulate the Web UI, potentially compromising sensitive data.

The Impact of CVE-2021-20657

The vulnerability poses a medium threat level, with a CVSS v3.0 base score of 6.4. It allows for the execution of arbitrary JavaScript code, risking the integrity of the affected systems.

Technical Details of CVE-2021-20657

Below are the technical aspects of the CVE, including its description, affected systems and versions, and exploitation mechanism.

Vulnerability Description

IBM Sterling B2B Integrator versions 5.2.0.0 through 6.1.1.0 are exposed to stored cross-site scripting, enabling attackers to insert malicious JavaScript into the Web UI, potentially leading to credential exposure.

Affected Systems and Versions

The vulnerability impacts IBM Sterling B2B Integrator versions 5.2.0.0, 6.1.0.0, 6.0.3.4, and 6.1.0.3, leaving them open to stored cross-site scripting attacks.

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting crafted JavaScript into the Web UI, manipulating the interface to execute malicious actions.

Mitigation and Prevention

In response to this vulnerability, users and organizations are advised to take immediate action and implement long-term security measures to safeguard their systems.

Immediate Steps to Take

Apply official fixes provided by IBM to address the vulnerability in affected versions.
Monitor system logs and network traffic for any suspicious activities.

Long-Term Security Practices

Conduct regular security assessments and penetration testing to proactively identify vulnerabilities.
Educate users on safe browsing practices and the risks associated with executing unknown scripts.

Patching and Updates

Stay informed about security updates and patches released by IBM for Sterling B2B Integrator to mitigate the risk of stored cross-site scripting attacks.