CVE-2021-20362 in Cloud Pak for Applications
Summary
by MITRE • 07/13/2021
IBM Cloud Pak for Applications 4.3 is vulnerable to cross-site scripting. This vulnerability allows users to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session. IBM X-Force ID: 195033.
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Analysis
by VulDB Data Team • 07/18/2021
IBM Cloud Pak for Applications version 4.3 contains a cross-site scripting vulnerability that represents a significant security risk to organizations relying on this platform for application management and deployment. The vulnerability stems from insufficient input validation and output encoding within the web user interface components, allowing malicious actors to inject malicious JavaScript code through crafted user input fields or parameters. This flaw specifically affects the web-based administrative console and management interfaces that users interact with during application deployment, configuration, and monitoring activities.
The technical nature of this vulnerability aligns with CWE-79, which describes cross-site scripting flaws where untrusted data is incorporated into web pages without proper sanitization or encoding. Attackers can exploit this weakness by crafting malicious payloads that, when executed in a victim's browser, can capture session cookies, credentials, or other sensitive information transmitted within the trusted session. The vulnerability is particularly concerning because it operates within the context of a trusted application environment, meaning that successful exploitation could allow attackers to impersonate legitimate users and gain unauthorized access to application resources and data. The IBM X-Force ID 195033 further validates the severity and specific characteristics of this particular implementation flaw.
The operational impact of this vulnerability extends beyond simple data theft, as it can enable persistent attacks that compromise the integrity of the entire application management ecosystem. Organizations using IBM Cloud Pak for Applications 4.3 may experience unauthorized access to deployment configurations, application credentials, and sensitive operational data. The attack surface is particularly broad since the vulnerability affects the core administrative interface where users perform critical operations such as application lifecycle management, user provisioning, and configuration changes. This exposure could lead to complete compromise of the application platform and potential lateral movement within the organization's infrastructure.
Mitigation strategies should focus on immediate patch application from IBM, which typically involves implementing proper input validation and output encoding mechanisms to prevent JavaScript injection. Organizations should also implement web application firewalls and content security policies to add defensive layers against such attacks. Regular security assessments and input validation testing should be conducted to identify similar vulnerabilities in other components of the application stack. Additionally, implementing strict session management practices and monitoring for suspicious user activities can help detect exploitation attempts. The vulnerability demonstrates the importance of following secure coding practices and adhering to established security frameworks such as the OWASP Top Ten and NIST cybersecurity guidelines to prevent similar issues in future application development cycles.