CVE-2022-0277 in Microweber
Summary
by MITRE • 01/20/2022
Improper Access Control in Packagist microweber/microweber prior to 1.2.11.
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Analysis
by VulDB Data Team • 03/13/2026
The vulnerability identified as CVE-2022-0277 represents a critical improper access control flaw within the Packagist package management system associated with the microweber/microweber software. This issue affects versions prior to 1.2.11 and stems from inadequate authorization mechanisms that allow unauthorized users to gain access to restricted functionalities and data within the application's package management infrastructure. The flaw exists in the software's permission validation logic where proper access controls are not enforced during package installation, modification, or deletion operations. Attackers exploiting this vulnerability can potentially manipulate package repositories, install malicious code, or disrupt normal package management operations. The vulnerability falls under the CWE-285 category of Improper Access Control, which is a fundamental security weakness that allows unauthorized access to resources or capabilities that should be restricted to authorized users. From an operational perspective, this vulnerability creates a significant risk for organizations relying on microweber's package management system, as it could enable attackers to compromise the integrity of their software supply chain. The impact extends beyond simple unauthorized access, as malicious actors could leverage this flaw to inject backdoors or malware into package repositories, affecting all downstream users who rely on these packages for their applications. This type of vulnerability aligns with ATT&CK technique T1218 which involves the use of legitimate credentials and system access to execute malicious code, and T1583 which covers the development of tools and malware for exploitation purposes.
The technical implementation of this access control flaw suggests that the microweber package management system fails to properly validate user permissions before executing package-related operations. When users attempt to perform actions such as installing new packages, modifying existing package metadata, or deleting packages from the repository, the system does not adequately verify whether the requesting user possesses the necessary privileges to perform these operations. This weakness creates a pathway for privilege escalation attacks where unauthenticated or low-privilege users can potentially execute administrative functions. The vulnerability is particularly concerning because package management systems serve as critical components in software development ecosystems, making them attractive targets for attackers seeking to compromise the broader software supply chain. The flaw likely exists in the authentication and authorization modules of the application's backend services, where session validation or role-based access controls are either missing or improperly implemented. Organizations using affected versions of microweber should immediately consider implementing network segmentation to isolate package management services and reduce the attack surface. The vulnerability also highlights the importance of proper input validation and privilege checking in web applications, particularly those handling package repositories. Security practitioners should monitor for any suspicious package installations or modifications that could indicate exploitation attempts. Additionally, the issue demonstrates the necessity of regular security audits and penetration testing of package management systems to identify similar access control weaknesses that could be exploited by adversaries.
Mitigation strategies for CVE-2022-0277 should prioritize immediate patching of affected systems to version 1.2.11 or later, which contains the necessary access control fixes. Organizations should also implement comprehensive monitoring solutions to detect unauthorized access attempts or anomalous package management activities. Network-level controls including firewalls and access control lists should be configured to restrict access to package management interfaces to only trusted administrative users. The implementation of multi-factor authentication for package management operations can provide additional layers of security beyond simple username and password authentication. Regular security assessments should be conducted to verify that access controls are properly enforced and that no similar vulnerabilities exist in other parts of the application. System administrators should also establish proper logging and alerting mechanisms to detect potential exploitation attempts, particularly around package installation and modification events. The vulnerability serves as a reminder of the critical importance of maintaining up-to-date software versions and implementing robust access control mechanisms in all application components, especially those handling sensitive operations like package management. Organizations should also consider implementing software composition analysis tools to monitor for vulnerable dependencies and ensure their package repositories remain secure against similar access control attacks. The incident underscores the need for comprehensive security training for developers and administrators to understand the implications of improper access control implementations and the importance of following secure coding practices.