CVE-2023-5916 in Dashy
Summary
by MITRE • 11/02/2023
A vulnerability classified as critical has been found in Lissy93 Dashy 2.1.1. This affects an unknown part of the file /config-manager/save of the component Configuration Handler. The manipulation of the argument config leads to improper access controls. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The identifier VDB-244305 was assigned to this vulnerability.
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Analysis
by VulDB Data Team • 11/30/2023
The vulnerability identified as CVE-2023-5916 represents a critical access control flaw within Lissy93 Dashy version 2.1.1, specifically within the Configuration Handler component. This security weakness resides in the file /config-manager/save endpoint, where improper validation of the config argument creates a pathway for unauthorized access to system configuration data. The vulnerability's classification as critical indicates its potential for severe impact on system security and data integrity. The flaw allows attackers to manipulate the configuration handling process through a remote attack vector, eliminating the need for local system access or physical presence.
The technical implementation of this vulnerability stems from inadequate input validation and access control mechanisms within the configuration management subsystem. When the config argument is processed through the /config-manager/save endpoint, the system fails to properly verify the authenticity and authorization of the configuration data being submitted. This improper access control allows malicious actors to submit arbitrary configuration parameters that could potentially alter system settings, inject malicious configurations, or access sensitive system information. The vulnerability's exploitation requires only remote network access, making it particularly dangerous as it can be leveraged from anywhere on the internet without requiring privileged local access.
The operational impact of CVE-2023-5916 extends beyond simple unauthorized access, as it could enable attackers to modify critical system configurations that govern application behavior, user permissions, and data handling processes. Remote exploitation of this vulnerability means that attackers could potentially compromise the entire Dashy application environment, leading to data breaches, service disruption, or even complete system takeover. The disclosure of this exploit to the public community increases the likelihood of real-world attacks, as threat actors can now leverage existing code to target vulnerable installations. This vulnerability directly violates the principle of least privilege and proper input validation as outlined in security best practices.
Organizations running Lissy93 Dashy 2.1.1 should immediately implement mitigations including immediate patching of the application to the latest version that addresses this vulnerability. Network segmentation and firewall rules should be implemented to restrict access to the /config-manager/save endpoint, particularly if the application is exposed to untrusted networks. Additional security measures should include monitoring for unauthorized configuration changes and implementing robust input validation for all user-supplied parameters. The vulnerability aligns with CWE-284, which addresses improper access control, and represents a clear violation of the ATT&CK technique T1078 for valid accounts and T1566 for malicious file execution through web application vulnerabilities. Organizations should also consider implementing web application firewalls to detect and block exploitation attempts targeting this specific endpoint.