Apache Log4j Vulnerabilities - Impact to Siemens Energy Sensformer / Sensgear (Platform, Basic and Advanced)
Act Now10SSA-479842Dec 21, 2021
Attack VectorNetwork
Auth RequiredNone
ComplexityLow
User InteractionNone needed
Summary
Apache Log4j vulnerabilities (CVE-2021-44228, CVE-2021-45046, CVE-2021-45105) in Siemens Energy Sensformer / Sensgear platform allow remote unauthenticated attackers to execute arbitrary code, cause denial of service, or disclose information. CVE-2021-44228 ("Log4Shell") enables remote code execution via log message injection. CVE-2021-45046 and CVE-2021-45105 enable denial of service and potential remote code execution. The cloud service has been remediated by Siemens; on-premises or self-hosted installations below v2.7.0 remain vulnerable.
What this means
What could happen
An unauthenticated attacker on the internet could execute arbitrary code on vulnerable Sensformer / Sensgear instances, potentially allowing them to disable the platform, alter energy management data, or disrupt grid monitoring and control operations.
Who's at risk
Energy utilities and operators relying on Siemens Sensformer or Sensgear platforms (versions below 2.7.0) for grid monitoring, forecasting, or energy management. This impacts on-premises and self-hosted deployments. The Siemens-hosted cloud service has already been patched.
How it could be exploited
An attacker sends a specially crafted log message containing a JNDI (Java Naming and Directory Interface) lookup string to any component that logs input. When Log4j processes this message, it automatically fetches and executes malicious code from an attacker-controlled server. No authentication or user interaction is required.
Prerequisites
- Network access to the Sensformer / Sensgear application over the internet or internal network
- No credentials required
- Vulnerable Log4j version (before 2.12.2 or 2.16.0) in use
Remotely exploitableNo authentication requiredLow complexity attackActively exploited (KEV)EPSS score 94.4% (critical)Affects critical energy infrastructureRemote code execution possible
Exploitability
Actively exploited — confirmed by CISA KEV
Affected products (1)
ProductAffected VersionsFix Status
Sensformer / Sensgear Platform< V2.7.02.7.0
Remediation & Mitigation
0/4
Do now
0/3HOTFIXUpgrade Sensformer / Sensgear to version 2.7.0 or later, which includes patched Log4j libraries
WORKAROUNDIf upgrade is not immediately possible, restrict network access to the Sensformer / Sensgear application to only authorized users and systems using firewall rules or network segmentation
WORKAROUNDDisable or restrict remote access to the Sensformer / Sensgear application until patched
Long-term hardening
0/1HARDENINGImplement network segmentation to isolate Sensformer / Sensgear from untrusted networks and the internet
↑↓ Navigate · Esc Close
API:
/api/v1/advisories/008986aa-e642-4aff-ae14-0e9e3755955a