VDB-196313 · CVE-2021-32976 · icsa-21-187-01

Moxa NPort IAW5000A up to 2.2 Web Server stack-based overflow

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
9.8	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Moxa NPort IAW5000A up to 2.2. It has been classified as critical. The impacted element is an unknown function of the component Web Server. The manipulation leads to stack-based overflow. This vulnerability is listed as CVE-2021-32976. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability was found in Moxa NPort IAW5000A up to 2.2 (Automation Software) and classified as very critical. This issue affects an unknown code block of the component Web Server. 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 weakness was presented 04/02/2022 as icsa-21-187-01. The advisory is shared at cisa.gov. The identification of this vulnerability is CVE-2021-32976 since 05/13/2021. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/02/2022).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Automation Software

Vendor

Moxa

Name

NPort IAW5000A

Version

License

commercial

Website

Vendor: https://www.moxa.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.8

VulDB Base Score: 9.8
VulDB Temp Score: 9.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 9.8
CNA Vector (ICS-CERT): 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/13/2021 🔍
04/02/2022 +324 days 🔍
04/02/2022 +0 days 🔍
04/05/2022 +3 days 🔍

Sourcesinfo

Vendor: moxa.com

Advisory: icsa-21-187-01
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-32976 (🔍)
GCVE (CVE): GCVE-0-2021-32976
GCVE (VulDB): GCVE-100-196313

Entryinfo

Created: 04/02/2022 09:00
Updated: 04/05/2022 12:35
Changes: 04/02/2022 09:00 (50), 04/05/2022 12:35 (1)
Complete: 🔍
Cache ID: 216::103