A vulnerability, which was classified as critical, has been found in Netgear D6100, R7800, R9000, WNDR3700v4, WNDR4300, WNDR4300v2, WNDR4500v3 and WNR2000v5 (Wireless LAN Software). This issue affects an unknown code. The manipulation with an unknown input leads to a stack-based overflow vulnerability. Using CWE to declare the problem leads to CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user. This affects D6100 before 1.0.0.57, R7800 before 1.2.0.44, R9000 before 1.0.2.52, WNDR3700v4 before 1.0.2.92, WNDR4300 before 1.0.2.94, WNDR4300v2 before 1.0.0.54, WNDR4500v3 before 1.0.0.54, and WNR2000v5 before 1.0.0.62.

The weakness was disclosed 04/28/2020 (Website). It is possible to read the advisory at kb.netgear.com. The identification of this vulnerability is CVE-2018-21198 since 04/20/2020. The attack needs to be initiated within the local network. A simple authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available.

Upgrading eliminates this vulnerability.

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Productinfo

Type

• Wireless LAN Software

Vendor

• Netgear

Name

• D6100
• R7800
• R9000
• WNDR3700v4
• WNDR4300
• WNDR4300v2
• WNDR4500v3
• WNR2000v5

License

• commercial

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