PT-2020-8815 · NetGear · Netgear R7800+4

Mongo · Published 2020-04-27 · Updated 2020-05-01 · CVE-2018-21171

Positive Technologies (AI Summary)

CVSS v3.1

6.8

Medium

Base vector

AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions NETGEAR D6100 versions prior to 1.0.0.57 NETGEAR R7800 versions prior to 1.0.2.40 NETGEAR R9000 versions prior to 1.0.3.6 NETGEAR WNDR3700v4 versions prior to 1.0.2.92 NETGEAR WNDR4300 versions prior to 1.0.2.98

Description The issue is a stack-based buffer overflow that can be exploited by an authenticated user. This is a type of overflow where more data is written to a buffer than it is designed to hold, which can cause the extra data to spill over into adjacent areas of memory, potentially allowing an attacker to execute arbitrary code.

Recommendations For NETGEAR D6100 version prior to 1.0.0.57, update to version 1.0.0.57 or later. For NETGEAR R7800 version prior to 1.0.2.40, update to version 1.0.2.40 or later. For NETGEAR R9000 version prior to 1.0.3.6, update to version 1.0.3.6 or later. For NETGEAR WNDR3700v4 version prior to 1.0.2.92, update to version 1.0.2.92 or later. For NETGEAR WNDR4300 version prior to 1.0.2.98, update to version 1.0.2.98 or later.

Fix

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2018-21171

Affected Products

Netgear R6100

Netgear R7800

Netgear R9000

Netgear Wndr3700V4

Netgear Wndr4300

References · 4

• https://osv.dev/vulnerability/CVE-2018-21171 · Vendor Advisory
• https://kb.netgear.com/000055187/Security-Advisory-for-Post-Authentication-Stack-Overflow-on-Some-Routers-and-Gateways-PSV-2017-2632 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-21171 · Security Note
• https://t.me/cvenotify/3275 · Telegram Post