8.8
HIGH
CVE-2018-21205
NETGEAR Stack-Based Buffer Overflow Vulnerability
Description

Certain NETGEAR devices are affected by a stack-based buffer overflow by an unauthenticated attacker. This affects D7800 before 1.0.1.30, EX2700 before 1.0.1.28, R6100 before 1.0.1.20, R7500 before 1.0.0.118, R7500v2 before 1.0.3.24, R7800 before 1.0.2.40, R9000 before 1.0.2.52, WN2000RPTv3 before 1.0.1.20, WN3000RPv3 before 1.0.2.50, WN3100RPv2 before 1.0.0.56, WNDR3700v4 before 1.0.2.96, WNDR4300 before 1.0.2.98, WNDR4300v2 before 1.0.0.50, and WNDR4500v3 before 1.0.0.50.

INFO

Published Date :

April 28, 2020, 4:15 p.m.

Last Modified :

May 5, 2020, 9:08 p.m.

Source :

[email protected]

Remotely Exploitable :

No

Impact Score :

5.9

Exploitability Score :

2.8
Affected Products

The following products are affected by CVE-2018-21205 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Netgear wndr4500_firmware
2 Netgear r7800_firmware
3 Netgear d7800_firmware
4 Netgear r7500_firmware
5 Netgear ex2700_firmware
6 Netgear wn2000rpt_firmware
7 Netgear wn3000rp_firmware
8 Netgear wn3100rp_firmware
9 Netgear wndr3700_firmware
10 Netgear wndr4300_firmware
11 Netgear r6100_firmware
12 Netgear r900_firmware
: Total Affected Vendor : 1 | Products : 12
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2018-21205.

URL Resource
https://kb.netgear.com/000055144/Security-Advisory-for-Pre-Authentication-Stack-Overflow-on-Some-Routers-Gateways-and-Extenders-PSV-2017-2568 Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2018-21205 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2018-21205 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Initial Analysis by [email protected]

    May. 05, 2020

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:A/AC:L/Au:N/C:P/I:P/A:P)
    Added CVSS V3.1 NIST AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://kb.netgear.com/000055144/Security-Advisory-for-Pre-Authentication-Stack-Overflow-on-Some-Routers-Gateways-and-Extenders-PSV-2017-2568 No Types Assigned https://kb.netgear.com/000055144/Security-Advisory-for-Pre-Authentication-Stack-Overflow-on-Some-Routers-Gateways-and-Extenders-PSV-2017-2568 Vendor Advisory
    Added CWE NIST CWE-120
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:d7800_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.1.30 OR cpe:2.3:h:netgear:d7800:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:ex2700_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.1.28 OR cpe:2.3:h:netgear:ex2700:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:r6100_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.1.20 OR cpe:2.3:h:netgear:r6100:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:r7500_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.0.118 OR cpe:2.3:h:netgear:r7500:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:r7500_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.3.24 OR cpe:2.3:h:netgear:r7500:v2:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:r7800_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.2.40 OR cpe:2.3:h:netgear:r7800:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:r900_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.2.52 OR cpe:2.3:h:netgear:r900:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:wn2000rpt_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.1.20 OR cpe:2.3:h:netgear:wn2000rpt:v3:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:wn3000rp_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.2.50 OR cpe:2.3:h:netgear:wn3000rp:v3:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:wn3100rp_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.0.56 OR cpe:2.3:h:netgear:wn3100rp:v2:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:wndr3700_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.2.96 OR cpe:2.3:h:netgear:wndr3700:v4:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:wndr4300_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.2.98 OR cpe:2.3:h:netgear:wndr4300:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:wndr4300_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.0.50 OR cpe:2.3:h:netgear:wndr4300:v2:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:wndr4500_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.0.50 OR cpe:2.3:h:netgear:wndr4500:v3:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2018-21205 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2018-21205 weaknesses.

CAPEC-8: Buffer Overflow in an API Call Buffer Overflow in an API Call CAPEC-9: Buffer Overflow in Local Command-Line Utilities Buffer Overflow in Local Command-Line Utilities CAPEC-10: Buffer Overflow via Environment Variables Buffer Overflow via Environment Variables CAPEC-14: Client-side Injection-induced Buffer Overflow Client-side Injection-induced Buffer Overflow CAPEC-24: Filter Failure through Buffer Overflow Filter Failure through Buffer Overflow CAPEC-42: MIME Conversion MIME Conversion CAPEC-44: Overflow Binary Resource File Overflow Binary Resource File CAPEC-45: Buffer Overflow via Symbolic Links Buffer Overflow via Symbolic Links CAPEC-46: Overflow Variables and Tags Overflow Variables and Tags CAPEC-47: Buffer Overflow via Parameter Expansion Buffer Overflow via Parameter Expansion CAPEC-67: String Format Overflow in syslog() String Format Overflow in syslog() CAPEC-92: Forced Integer Overflow Forced Integer Overflow CAPEC-100: Overflow Buffers Overflow Buffers
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.08 }} 0.00%

score

0.32361

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
: