CVE-2020-27861
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR Orbi 2.5.1.16 routers.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.03%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.1
- 8.8 HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 2.03% probability · 80th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-78
- Affected
- netgear/cbk40 firmware · netgear/cbk43 firmware · netgear/cbr40 firmware · netgear/ex6200 firmware · netgear/ex7700 firmware · netgear/ex8000 firmware · netgear/rbk12 firmware · netgear/rbk13 firmware · netgear/rbk14 firmware · netgear/rbk15 firmware · netgear/rbr10 firmware · netgear/rbs10 firmware · netgear/rbk20w firmware · netgear/rbk23w firmware · netgear/rbk20 router firmware · netgear/rbk20 satellite firmware · netgear/rbk22 router firmware · netgear/rbk22 satellite firmware · netgear/rbk23 router firmware · netgear/rbk23 satellite firmware · +19 more
- Source
- zdi-disclosures@trendmicro.com
References
- https://kb.netgear.com/000062507/Security-Advisory-for-Unauthenticated-Command-Injection-Vulnerability-on-Some-Extenders-and-Orbi-WiFi-SystemsVendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-20-1430/Third Party Advisory, VDB Entry
- https://kb.netgear.com/000062507/Security-Advisory-for-Unauthenticated-Command-Injection-Vulnerability-on-Some-Extenders-and-Orbi-WiFi-SystemsVendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-20-1430/Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.