CVE-2021-37200 : What You Need to Know
Learn about CVE-2021-37200, a path traversal vulnerability in Siemens SINEC NMS allowing unauthorized file downloads. Understand the impact, affected systems, and mitigation steps.
A vulnerability has been identified in SINEC NMS (All versions < V1.0 SP1) by Siemens. An attacker with access to the webserver of an affected system could download arbitrary files from the underlying filesystem by sending a specially crafted HTTP request.
Understanding CVE-2021-37200
This CVE identifies a path traversal vulnerability in SINEC NMS, potentially allowing unauthorized file downloads.
What is CVE-2021-37200?
The CVE-2021-37200 vulnerability affects Siemens' SINEC NMS versions below V1.0 SP1, enabling attackers to retrieve sensitive files through a manipulated HTTP request.
The Impact of CVE-2021-37200
The vulnerability poses a significant security risk as it could lead to unauthorized access to confidential data stored on the system, compromising the integrity and confidentiality of the information.
Technical Details of CVE-2021-37200
The technical details emphasize the vulnerability description, affected systems, versions, and exploitation mechanism.
Vulnerability Description
The CVE-2021-37200 flaw involves improper limitation of a pathname to a restricted directory, opening the door for path traversal attacks and unauthorized file retrieval.
Affected Systems and Versions
All versions of SINEC NMS prior to V1.0 SP1 are impacted by this vulnerability, potentially exposing any system running these versions to exploitation.
Exploitation Mechanism
Attackers can exploit this vulnerability by leveraging a specially crafted HTTP request to navigate beyond the intended directory, gaining access to files stored on the underlying filesystem.
Mitigation and Prevention
Protecting systems from CVE-2021-37200 requires immediate action and long-term security measures to ensure comprehensive defense against similar vulnerabilities.
Immediate Steps to Take
System administrators should apply security patches provided by Siemens promptly to mitigate the risk of exploitation. Additionally, restricting access to the webserver can help prevent unauthorized file downloads.
Long-Term Security Practices
Implementing robust access controls, conducting regular security assessments, and staying informed about security best practices are vital for enhancing the overall security posture.
Patching and Updates
Regularly monitoring for security updates and promptly applying patches released by Siemens can help in safeguarding systems against known vulnerabilities.