Full Report
SINEC NMS before V2.0 is affected by a code injection and a stored cross-site scripting vulnerability. Siemens has released an update for SINEC NMS and recommends to update to the latest version.
Analysis Summary
# Vulnerability: Multiple Flaws in SINEC NMS (Code Injection and Stored XSS)
## CVE Details
- CVE ID: CVE-2022-30527, CVE-2023-44315
- CVSS Score: 7.8 (CVE-2022-30527 - High), 4.7 (CVE-2023-44315 - Medium)
- CWE: CVE-2022-30527: CWE-732 (Incorrect Permission Assignment for Critical Resource); CVE-2023-44315: CWE-79 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'))
## Affected Systems
- Products: SINEC NMS
- Versions: All versions prior to V2.0
- Configurations: N/A
## Vulnerability Description
Two primary vulnerabilities affect SINEC NMS before V2.0:
1. **CVE-2022-30527 (Code Injection/Privilege Escalation):** The application improperly assigns access rights to specific folders containing executable files and libraries. This vulnerability can allow an authenticated local attacker to inject arbitrary code and escalate privileges.
2. **CVE-2023-44315 (Stored XSS):** The application improperly sanitizes certain SNMP configuration data retrieved from monitored devices. This allows an attacker with access to a monitored device to execute a stored XSS attack, potentially leading to unintentional modification of application data by legitimate users.
## Exploitation
| CVE | Status | Complexity | Attack Vector |
| :--- | :--- | :--- | :--- |
| CVE-2022-30527 | PoC available (Indicated by E:P in vector) | Low (Requires local authentication) | Local (AV:L) |
| CVE-2023-44315 | PoC available (Indicated by E:P in vector) | High (Requires network access and user interaction) | Network (AV:N) |
## Impact
| CVE | Confidentiality | Integrity | Availability |
| :--- | :--- | :--- | :--- |
| CVE-2022-30527 | High (C:H) | High (I:H) | High (A:H) |
| CVE-2023-44315 | Low (C:L) | Low (I:L) | None (A:N) |
## Remediation
### Patches
- Update SINEC NMS to **V2.0 or a later version**.
- Vendor Link for details: hXXps://support.industry.siemens.com/cs/ww/en/view/109824030/
### Workarounds
Specific mitigations provided by Siemens:
* **For CVE-2023-44315 (Stored XSS):** Restrict network access to the SNMP servers in the device network.
* **For CVE-2022-30527 (Code Injection):** Ensure that only trusted persons have access to the system and avoid the configuration of additional accounts.
## Detection
- **Indicators of Compromise:** Not explicitly detailed in the summary. Detection should focus on monitoring attempts to modify system files or configuration points related to the SNMP stack, or unexpected script execution within the NMS web interface following configuration imports.
- **Detection Methods and Tools:** Apply general security recommendations from Siemens and monitor for unauthorized privilege changes or memory corruption on endpoints running the NMS software.
## References
- Siemens Security Advisory SSA-160243
- Vendor Page: hXXps://cert-portal.siemens.com/productcert/html/ssa-160243.html