Full Report
Multiple vulnerabilities have been identified in the BIOS of the SIMATIC S7-1500 TM MFP before V1.3.0. Siemens has released a new version for SIMATIC S7-1500 TM MFP - BIOS and recommends to update to the latest version.
Analysis Summary
This security summary focuses exclusively on the vulnerabilities affecting the SIMATIC S7-1500 TM MFP BIOS, as detailed in Siemens Security Advisory SSA-831302.
Due to the structure of the provided text, which lists numerous CVEs associated with the general advisory but does not explicitly map *which* CVEs relate to the S7-1500 TM MFP BIOS specifically, the summary must list the collective findings but will lack specific details (like technical description or severity for each individual CVE) for the BIOS vulnerability itself, beyond the overall advisory CVSS score.
# Vulnerability: Multiple Vulnerabilities in SIMATIC S7-1500 TM MFP BIOS
## CVE Details
*Note: The advisory covers multiple CVEs. The following details reflect the overall advisory context, which includes all listed CVEs, but specific technical details and individual severity for the BIOS flaw are not segregated in the provided text.*
- **CVE IDs:** CVE-2016-10228, CVE-2019-25013, CVE-2020-1752, CVE-2020-10029, CVE-2020-27618, CVE-2020-29562, CVE-2021-3326, CVE-2021-3998, CVE-2021-3999, CVE-2021-20269, CVE-2021-27645, CVE-2021-28831, CVE-2021-33574, CVE-2021-35942, CVE-2021-38604, CVE-2021-42373 through CVE-2021-42386, CVE-2021-44879, CVE-2022-1015, CVE-2022-1882, CVE-2022-2585, CVE-2022-2588, CVE-2022-2905, CVE-2022-3028, CVE-2022-3435, CVE-2022-3586, CVE-2022-4378, CVE-2022-4662, CVE-2022-20421, CVE-2022-20422, CVE-2022-21233, CVE-2022-23218, CVE-2022-23219, CVE-2022-28391, CVE-2022-30065, CVE-2022-39188, CVE-2022-39190, CVE-2022-40307 and others added in later updates (including CVE-2023-31248, CVE-2023-35001, CVE-2023-45863).
- **CVSS Score:** 9.8 (Maximum severity implied by the advisory's overall score structure, though not explicitly tied to a single BIOS vulnerability)
- **CWE:** Not specified for the BIOS vulnerability group.
## Affected Systems
- **Products:** SIMATIC S7-1500 TM MFP - BIOS
- **Versions:** All versions prior to V1.3.0.
- **Configurations:** Applicable to the listed product line regardless of specific configuration, as the flaw resides in the BIOS.
## Vulnerability Description
Multiple vulnerabilities exist within the BIOS firmware of the SIMATIC S7-1500 TM MFP. The advisory recommends immediate updating as these flaws could be critical concerning system integrity and security. Specific technical details of the flaws within the BIOS update are not detailed in the summary text provided, but the high CVSS score suggests severe potential impact, likely related to unauthorized access or code execution at a low level.
## Exploitation
- **Status:** Unknown/Not explicitly stated (as extracted).
- **Complexity:** Unknown.
- **Attack Vector:** Unknown, but BIOS vulnerabilities often imply local or physical access, though network-related issues cannot be ruled out given the collective CVE list range.
## Impact
*Note: Impact assessment is based on the general critical score provided by Siemens (9.8).*
- **Confidentiality:** High (Likely potential for sensitive data exposure)
- **Integrity:** High (Likely potential for unauthorized modification of system settings or firmware)
- **Availability:** High (Likely potential for system denial of service or persistent compromise)
## Remediation
### Patches
- Update the SIMATIC S7-1500 TM MFP - BIOS to **Version V1.3.0 or later**. (The advisory current version is V1.4, indicating newer fixes are available.)
### Workarounds
- No specific workarounds are detailed in the provided summary text. The sole recommendation is to update the BIOS.
## Detection
- **Indicators of Compromise:** Not specified in the provided text.
- **Detection methods and tools:** Not specified in the provided text. Verification should focus on confirming the current BIOS version installed on the devices.
## References
- **Vendor Advisories:** ssa-831302
- **Relevant Links:**
- Siemens ProductCERT Portal: hxxps://cert-portal.siemens.com/productcert/html/ssa-831302.html
- Siemens Global Website Terms of Use: hxxps://www.siemens.com/terms_of_use