PT-2020-8848 · NetGear · Netgear R7800+8

Mongo · Published 2020-04-28 · Updated 2020-05-06 · CVE-2018-21204

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions NETGEAR D7800 versions 1.0.1.29 and earlier NETGEAR R6100 versions 1.0.1.19 and earlier NETGEAR R7500 versions 1.0.0.117 and earlier NETGEAR R7500v2 versions 1.0.3.23 and earlier NETGEAR R7800 versions 1.0.2.39 and earlier NETGEAR R9000 versions 1.0.2.51 and earlier NETGEAR WNDR3700v4 versions 1.0.2.95 and earlier NETGEAR WNDR4300 versions 1.0.2.97 and earlier NETGEAR WNDR4300v2 versions 1.0.0.49 and earlier NETGEAR WNDR4500v3 versions 1.0.0.49 and earlier

Description The issue is a stack-based buffer overflow that can be exploited by an unauthenticated attacker. This allows for potential remote code execution without the need for authentication.

Recommendations For NETGEAR D7800 version 1.0.1.29 and earlier, update to version 1.0.1.30 or later. For NETGEAR R6100 version 1.0.1.19 and earlier, update to version 1.0.1.20 or later. For NETGEAR R7500 version 1.0.0.117 and earlier, update to version 1.0.0.118 or later. For NETGEAR R7500v2 version 1.0.3.23 and earlier, update to version 1.0.3.24 or later. For NETGEAR R7800 version 1.0.2.39 and earlier, update to version 1.0.2.40 or later. For NETGEAR R9000 version 1.0.2.51 and earlier, update to version 1.0.2.52 or later. For NETGEAR WNDR3700v4 version 1.0.2.95 and earlier, update to version 1.0.2.96 or later. For NETGEAR WNDR4300 version 1.0.2.97 and earlier, update to version 1.0.2.98 or later. For NETGEAR WNDR4300v2 version 1.0.0.49 and earlier, update to version 1.0.0.50 or later. For NETGEAR WNDR4500v3 version 1.0.0.49 and earlier, update to version 1.0.0.50 or later.

Fix

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2018-21204

Affected Products

Netgear R7800

Netgear R6100

Netgear R7500

Netgear R7500V2

Netgear R9000

Netgear Wndr3700V4

Netgear Wndr4300

Netgear Wndr4300V2

Netgear Wndr4500V3

References · 4

• https://osv.dev/vulnerability/CVE-2018-21204 · Vendor Advisory
• https://kb.netgear.com/000055145/Security-Advisory-for-Pre-Authentication-Stack-Overflow-on-Some-Routers-and-Gateways-PSV-2017-2569 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-21204 · Security Note
• https://t.me/cvenotify/3328 · Telegram Post