ZDI-21-253: Siemens SINEC NMS FirmwareFileUtils extractToFolder Directory Traversal Remote Code Execution Vulnerability
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Siemens SINEC NMS. Authentication is required to exploit this vulnerability. The specific flaw exists within the FirmwareFileUtils class. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to execute code in the context of SYSTEM.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Siemens SINEC NMS |
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Reference Links
Frequently Asked Questions
What is the severity of ZDI-21-253?
The severity of ZDI-21-253 is high due to the potential for remote code execution by authenticated attackers.
How do I fix ZDI-21-253?
To fix ZDI-21-253, ensure your Siemens SINEC NMS installations are updated to the latest firmware version provided by Siemens.
What causes the vulnerability ZDI-21-253?
ZDI-21-253 is caused by a flaw in the FirmwareFileUtils class that lacks proper validation of user input.
Who is affected by ZDI-21-253?
Organizations using Siemens SINEC NMS are affected by ZDI-21-253, specifically installations that require authentication.
Can ZDI-21-253 be exploited without authentication?
No, ZDI-21-253 cannot be exploited without authentication, as it requires valid user credentials.
- agent/type
- agent/softwarecombine
- collector/zdi-advisory
- source/ZDI
- alias/ZDI-21-253
- alias/ZDI-CAN-12054
- alias/CVE-2020-25237
- agent/software-canonical-lookup
- agent/references
- agent/severity
- agent/title
- agent/tags
- agent/description
- agent/event
- agent/source
- vendor/siemens
- canonical/siemens sinec nms