CVE-2020-25840 in Access Manager
Summary
by MITRE • 03/27/2021
Cross-Site scripting vulnerability in Micro Focus Access Manager product, affects all version prior to version 5.0. The vulnerability could cause configuration destruction.
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Analysis
by VulDB Data Team • 04/05/2021
The Cross-Site Scripting vulnerability identified as CVE-2020-25840 resides within the Micro Focus Access Manager product line, representing a critical security flaw that impacts all versions preceding the 5.0 release. This vulnerability operates at the intersection of web application security and identity management systems, where the Access Manager serves as a crucial component for authentication and access control within enterprise environments. The flaw manifests as an insufficient input validation mechanism that fails to properly sanitize user-supplied data before processing or rendering within the application's web interface. This weakness creates an attack surface where malicious actors can inject malicious scripts that execute within the context of other users' browsers, potentially compromising the integrity of the authentication system and the sensitive data it manages.
The technical exploitation of this XSS vulnerability occurs when user input is improperly handled in the application's configuration interfaces or administrative panels. Attackers can craft malicious payloads that, when processed by the vulnerable system, get executed in the browsers of authenticated users who visit affected pages. The configuration destruction aspect of this vulnerability indicates that the malicious scripts could potentially manipulate or corrupt system settings, user permissions, or access controls, leading to unauthorized privilege escalation or complete system compromise. This vulnerability falls under CWE-79 which specifically addresses Cross-Site Scripting flaws in web applications, and aligns with ATT&CK technique T1059.007 for Scripting, where adversaries leverage web-based scripting vulnerabilities to execute malicious code within target environments.
The operational impact of CVE-2020-25840 extends beyond simple data theft or defacement, as it represents a fundamental threat to the integrity and availability of enterprise access management systems. Organizations utilizing affected versions of Micro Focus Access Manager face potential unauthorized access to sensitive systems, data breaches, and complete compromise of their authentication infrastructure. The configuration destruction capability means that attackers could modify critical access policies, create backdoor accounts, or disable security controls entirely, effectively undermining the security posture of the entire organization. This vulnerability particularly affects enterprise environments where the Access Manager controls access to critical business applications and sensitive data repositories, making it a prime target for sophisticated attack campaigns.
Organizations should immediately implement comprehensive mitigation strategies including mandatory application updates to version 5.0 or later, which would contain the patched XSS vulnerability. Network segmentation and web application firewalls can provide additional protective layers, though these measures should not be considered replacements for proper patch management. Security monitoring should be enhanced to detect anomalous behavior in configuration changes or suspicious script execution patterns within the web interface. Regular security assessments and penetration testing of the Access Manager environment should be conducted to identify potential exploitation attempts, while user education regarding suspicious web interactions remains crucial for preventing successful social engineering attacks that could leverage this vulnerability. The remediation process should also include thorough review and validation of all system configurations to ensure that no malicious modifications have occurred due to prior exploitation attempts.