CVSS VectorNVD
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
1DescriptionNVD
Glances is an open-source system cross-platform monitoring tool. Prior to version 4.5.4, the Glances web server exposes a REST API (/api/4/*) that is accessible without authentication and allows cross-origin requests from any origin due to a permissive CORS policy (Access-Control-Allow-Origin: *). This allows a malicious website to read sensitive system information from a running Glances instance in the victim’s browser, leading to cross-origin data exfiltration. While a previous advisory exists for XML-RPC CORS issues, this report demonstrates that the REST API (/api/4/*) is also affected and exposes significantly more sensitive data. Version 4.5.4 patches the issue.
AnalysisAI
Glances web server versions before 4.5.4 expose unauthenticated REST API endpoints (/api/4/*) with permissive CORS policy allowing any origin to read sensitive system monitoring data through victim browsers. Publicly available exploit code exists. …
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RemediationAI
Within 24 hours: Identify all Glances web server instances in your environment and document current versions (check /api/4/help or version endpoints). Within 7 days: Upgrade all Glances instances to version 4.5.4 or later; if upgrades cannot be completed, implement network-level access controls to restrict /api/4/* endpoints to trusted internal networks only and disable or reconfigure CORS policy to reject cross-origin requests. …
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