Vulnerability in Grav CMS: File Upload Path Traversal
(CVE-2024-27921)
In recent cybersecurity news, a critical vulnerability has been identified in Grav, an open-source, flat-file content management system. This vulnerability, assigned the CVE ID CVE-2024-27921, involves a file upload path traversal issue that affects versions of the application prior to 1.7.45. The vulnerability allows attackers to manipulate file uploads by replacing or creating files with various extensions like .json, .zip, .css, .gif, among others.
### Vulnerability Details
The file upload path traversal vulnerability in Grav CMS poses significant risks as it enables malicious actors to inject arbitrary code onto the server. This type of attack can compromise the integrity of backup files by overwriting existing files or creating new ones. Additionally, attackers can exploit CSS exfiltration techniques to extract sensitive data from the server.
### Impact and Risks
The exploitation of this security flaw can have severe consequences for affected systems. By injecting malicious code, threat actors can execute unauthorized commands on the server, leading to potential data breaches or system compromise. The ability to overwrite or create files with specific extensions opens avenues for further attacks and data exfiltration.
### Mitigation and Patch
To address this critical security issue, users of Grav CMS are strongly advised to upgrade their installations to version 1.7.45 or later. This patched version contains fixes that prevent the file upload path traversal vulnerability and enhance the overall security posture of the system. By applying the necessary updates, organizations can effectively mitigate the risks associated with this vulnerability.
In conclusion, the discovery of the file upload path traversal vulnerability in Grav CMS highlights the importance of timely software updates and proactive security measures in safeguarding against potential cyber threats. Organizations utilizing Grav CMS should prioritize patching their systems to protect against exploitation and ensure the integrity and security of their data and infrastructure.
Citations:
[1] https://github.com/getgrav/grav/secu
rity/advisories/GHSA-m7hx-hw6h-mqmc
[2] https://twitter.com/CVEnew/status/1770931527779500404
[3] https://twitter.com/VulmonFeeds/status/1770974641017766074