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CVE-2021-27498— EIPStackGroup OpENer Ethernet/IP Reachable Assertion

Quick assessment

Affected
EIPStackGroup OpENer EtherNet/IP
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

EIPStackGroup OpENer是EIPStackGroup组织的一个用于为IO适配器设备提供EtherNet/IP堆栈功能的软件 。 EIPStackGroup OpENer Ethernet/IPA 存在安全漏洞，攻击者可利用该漏洞发送的专门制作的数据包可能导致拒绝服务条件。

CVSS 7.5 · High EPSS 1.29% · P68

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2021-27498

Vulnerability Information
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Vulnerability Title
EIPStackGroup OpENer Ethernet/IP Reachable Assertion
Source: CVE Program / CVE List V5
Vulnerability Description
A specifically crafted packet sent by an attacker to EIPStackGroup OpENer EtherNet/IP commits and versions prior to Feb 10, 2021 may result in a denial-of-service condition.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
可达断言
Source: CVE Program / CVE List V5
Vulnerability Title
EIPStackGroup OpENer 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
EIPStackGroup OpENer是EIPStackGroup组织的一个用于为IO适配器设备提供EtherNet/IP堆栈功能的软件 。 EIPStackGroup OpENer Ethernet/IPA 存在安全漏洞，攻击者可利用该漏洞发送的专门制作的数据包可能导致拒绝服务条件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
EIPStackGroup OpENer EtherNet/IP unspecified ~ Feb 10, 2021 -

II. Public POCs for CVE-2021-27498

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III. Intelligence Information for CVE-2021-27498

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Vendor Advisories for CVE-2021-27498 (1)

Other References for CVE-2021-27498 (1)

Same Patch Batch · EIPStackGroup · 2022-05-12 · 4 CVEs total

CVE-2021-27478 8.2 HIGH EIPStackGroup OpENer Ethernet/IP Incorrect Conversion between Numeric Types
CVE-2021-27482 7.5 HIGH EIPStackGroup OpENer Ethernet/IP Out-of-bounds Read
CVE-2021-27500 7.5 HIGH EIPStackGroup OpENer Ethernet/IP Reachable Assertion

IV. Related Vulnerabilities

Same product: OpENer EtherNet/IP
Same vendor: EIPStackGroup
Same weakness: CWE-617

V. Comments for CVE-2021-27498

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