CVE-2021-27424: GE UR family exposure of sensitive information to an unauthorized actor
First published: Wed Mar 23 2022(Updated: )
GE UR firmware versions prior to version 8.1x shares MODBUS memory map as part of the communications guide. GE was made aware a “Last-key pressed” MODBUS register can be used to gain unauthorized information.
Credit: ics-cert@hq.dhs.gov
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Ge Multilin B30 Firmware | <8.10 | |
| Ge Multilin B30 | ||
| Ge Multilin B90 Firmware | <8.10 | |
| Ge Multilin B90 | ||
| Ge Multilin C60 Firmware | <8.10 | |
| Ge Multilin C60 | ||
| Ge Multilin C70 Firmware | <8.10 | |
| Ge Multilin C70 | ||
| Ge Multilin C95 Firmware | <8.10 | |
| Ge Multilin C95 | ||
| Ge Multilin D30 Firmware | <8.10 | |
| Ge Multilin D30 | ||
| Ge Multilin D60 Firmware | <8.10 | |
| Ge Multilin D60 | ||
| Ge Multilin F35 Firmware | <8.10 | |
| Ge Multilin F35 | ||
| Ge Multilin F60 Firmware | <8.10 | |
| Ge Multilin F60 | ||
| Ge Multilin G30 Firmware | <8.10 | |
| Ge Multilin G30 | ||
| Ge Multilin G60 Firmware | <8.10 | |
| Ge Multilin G60 | ||
| Ge Multilin L30 Firmware | <8.10 | |
| Ge Multilin L30 | ||
| Ge Multilin L60 Firmware | <8.10 | |
| Ge Multilin L60 | ||
| Ge Multilin L90 Firmware | <8.10 | |
| Ge Multilin L90 | ||
| Ge Multilin M60 Firmware | <8.10 | |
| Ge Multilin M60 | ||
| Ge Multilin N60 Firmware | <8.10 | |
| Ge Multilin N60 | ||
| Ge Multilin T35 Firmware | <8.10 | |
| Ge Multilin T35 | ||
| Ge Multilin T60 Firmware | <8.10 | |
| Ge Multilin T60 | ||
| Ge Multilin C30 Firmware | <8.10 | |
| Ge Multilin C30 | ||
| GE Weakness in UR bootloader binary: all bootloader versions prior to 7.03/7.04 |
Remedy
GE strongly recommends users with impacted firmware versions update their UR devices to UR firmware Version 8.10, or greater to resolve these vulnerabilities. GE provides additional mitigations and information about these vulnerabilities in GE Publication Number: GES-2021-004 (login required).
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Reference Links
Frequently Asked Questions
What is the vulnerability ID of this vulnerability?
The vulnerability ID is CVE-2021-27424.
What is the severity level of CVE-2021-27424?
CVE-2021-27424 has a severity level of 5.3 (Medium).
How does CVE-2021-27424 affect GE UR firmware versions?
CVE-2021-27424 affects GE UR firmware versions prior to version 8.10.
What is the impact of CVE-2021-27424?
CVE-2021-27424 allows an attacker to gain unauthorized information by exploiting a "Last-key pressed" MODBUS register.
Where can I find more information about CVE-2021-27424?
You can find more information about CVE-2021-27424 at the following references: [Reference 1](https://www.cisa.gov/uscert/ics/advisories/icsa-21-075-02) and [Reference 2](https://www.gegridsolutions.com/Passport/Login.aspx).
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- collector/ics-cert-advisory
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- vendor/ge
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- canonical/ge multilin c30
- canonical/ge weakness in ur bootloader binary: all bootloader versions prior to 7.03/7.04