Vulnerability Description
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR Orbi 2.5.1.16 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the UA_Parser utility. A crafted Host Name option in a DHCP request can trigger execution of a system call composed from a user-supplied string. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-11076.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Netgear | Cbk40 Firmware | < 2.6.1.38 |
| Netgear | Cbk40 | - |
| Netgear | Cbk43 Firmware | < 2.6.1.38 |
| Netgear | Cbk43 | - |
| Netgear | Cbr40 Firmware | < 2.6.1.38 |
| Netgear | Cbr40 | - |
| Netgear | Ex6200 Firmware | < 1.0.1.82 |
| Netgear | Ex6200 | v2 |
| Netgear | Ex7700 Firmware | < 1.0.0.210 |
| Netgear | Ex7700 | - |
| Netgear | Ex8000 Firmware | < 1.0.1.224 |
| Netgear | Ex8000 | - |
| Netgear | Rbk12 Firmware | < 2.6.1.44 |
| Netgear | Rbk12 | - |
| Netgear | Rbk13 Firmware | < 2.6.1.44 |
| Netgear | Rbk13 | - |
| Netgear | Rbk14 Firmware | < 2.6.1.44 |
| Netgear | Rbk14 | - |
| Netgear | Rbk15 Firmware | < 2.6.1.44 |
| Netgear | Rbk15 | - |
Related Weaknesses (CWE)
References
- https://kb.netgear.com/000062507/Security-Advisory-for-Unauthenticated-Command-IVendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-20-1430/Third Party AdvisoryVDB Entry
- https://kb.netgear.com/000062507/Security-Advisory-for-Unauthenticated-Command-IVendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-20-1430/Third Party AdvisoryVDB Entry
FAQ
What is CVE-2020-27861?
CVE-2020-27861 is a vulnerability with a CVSS score of 8.8 (HIGH). This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR Orbi 2.5.1.16 routers. Authentication is not required to exploit this vulnerability....
How severe is CVE-2020-27861?
CVE-2020-27861 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-27861?
Check the references section above for vendor advisories and patch information. Affected products include: Netgear Cbk40 Firmware, Netgear Cbk40, Netgear Cbk43 Firmware, Netgear Cbk43, Netgear Cbr40 Firmware.