Vulnerability Description
GE UR firmware versions prior to version 8.1x web server task does not properly handle receipt of unsupported HTTP verbs, resulting in the web server becoming temporarily unresponsive after receiving a series of unsupported HTTP requests. When unresponsive, the web server is inaccessible. By itself, this is not particularly significant as the relay remains effective in all other functionality and communication channels.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| 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 | - |
Related Weaknesses (CWE)
References
- https://www.cisa.gov/uscert/ics/advisories/icsa-21-075-02MitigationThird Party AdvisoryUS Government Resource
- https://www.gegridsolutions.com/Passport/Login.aspxPermissions RequiredVendor Advisory
- https://www.cisa.gov/uscert/ics/advisories/icsa-21-075-02MitigationThird Party AdvisoryUS Government Resource
- https://www.gegridsolutions.com/Passport/Login.aspxPermissions RequiredVendor Advisory
FAQ
What is CVE-2021-27420?
CVE-2021-27420 is a vulnerability with a CVSS score of 5.3 (MEDIUM). GE UR firmware versions prior to version 8.1x web server task does not properly handle receipt of unsupported HTTP verbs, resulting in the web server becoming temporarily unresponsive after receiving ...
How severe is CVE-2021-27420?
CVE-2021-27420 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-27420?
Check the references section above for vendor advisories and patch information. Affected products include: Ge Multilin B30 Firmware, Ge Multilin B30, Ge Multilin B90 Firmware, Ge Multilin B90, Ge Multilin C60 Firmware.