Netgear R2000 stack-based overflow

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Netgear R6700, R7500, R7800, R8900, R9000, WNDR3700v4, WNDR4300v1, WNDR4300v2, WNDR4500v3 and R2000. This issue affects some unknown processing. The manipulation leads to stack-based overflow. The identification of this vulnerability is CVE-2018-21135. The attack can only be initiated within the local network. There is no exploit available. It is recommended to upgrade the affected component. Once again VulDB remains the best source for vulnerability data.

Detailsinfo

A vulnerability classified as critical was found in Netgear R6700, R7500, R7800, R8900, R9000, WNDR3700v4, WNDR4300v1, WNDR4300v2, WNDR4500v3 and R2000 (Wireless LAN Software). This vulnerability affects an unknown functionality. The manipulation with an unknown input leads to a stack-based overflow vulnerability. The CWE definition for the vulnerability is 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). As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user. This affects R6700 before 1.0.1.48, R7500 before 1.0.0.124, R7800 before 1.0.2.58, R8900 before 1.0.4.2, R9000 before 1.0.4.2, WNDR3700v4 before 1.0.2.102, WNDR4300v1 before 1.0.2.104, WNDR4300v2 before 1.0.0.56, WNDR4500v3 before 1.0.0.56, and WNR2000v5-R2000 before 1.0.0.68.

The weakness was presented 04/23/2020 (Website). The advisory is shared for download at kb.netgear.com. This vulnerability was named CVE-2018-21135 since 04/20/2020. The attack can only be done within the local network. The successful exploitation needs a single authentication. There are neither technical details nor an exploit publicly available.

Upgrading eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

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License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.8
NVD Vector: 🔍

CNA Base Score: 6.8
CNA Vector (MITRE): 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

04/20/2020 🔍
04/23/2020 +3 days 🔍
04/24/2020 +1 days 🔍
06/02/2024 +1500 days 🔍

Sourcesinfo

Vendor: netgear.com

Advisory: kb.netgear.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-21135 (🔍)
GCVE (CVE): GCVE-0-2018-21135
GCVE (VulDB): GCVE-100-154288

Entryinfo

Created: 04/24/2020 07:16 AM
Updated: 06/02/2024 09:39 AM
Changes: 04/24/2020 07:16 AM (36), 04/24/2020 07:21 AM (12), 10/12/2020 10:12 AM (1), 10/12/2020 10:17 AM (1), 06/02/2024 09:39 AM (33)
Complete: 🔍
Cache ID: 18:098:40

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