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CVE-2022-3976— MZ Automation libiec61850 MMS File Services mms_client_files.c path traversal

Quick assessment

Affected
MZ Automation libiec61850
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.

Mz Automation Libiec61850是Mz Automation公司的一个IEC 61850协议的开源库。 Mz Automation Libiec61850 1.4及之前版本存在路径遍历漏洞，该漏洞源于MMS File Services组件的src/mms/iso_mms/client/mms_client_files.c文件中的未知代码受到影响，对参数文件名的操作会导致路径遍历。

CVSS 5.5 · Medium EPSS 0.49% · P40

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2022-3976

Vulnerability Information
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Vulnerability Title
MZ Automation libiec61850 MMS File Services mms_client_files.c path traversal
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability has been found in MZ Automation libiec61850 up to 1.4 and classified as critical. This vulnerability affects unknown code of the file src/mms/iso_mms/client/mms_client_files.c of the component MMS File Services. The manipulation of the argument filename leads to path traversal. Upgrading to version 1.5 is able to address this issue. The name of the patch is 10622ba36bb3910c151348f1569f039ecdd8786f. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-213556.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
Mz Automation Libiec61850 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mz Automation Libiec61850是Mz Automation公司的一个IEC 61850协议的开源库。 Mz Automation Libiec61850 1.4及之前版本存在路径遍历漏洞，该漏洞源于MMS File Services组件的src/mms/iso_mms/client/mms_client_files.c文件中的未知代码受到影响，对参数文件名的操作会导致路径遍历。
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
MZ Automation libiec61850 1.0 -

II. Public POCs for CVE-2022-3976

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III. Intelligence Information for CVE-2022-3976

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Patches & Fixes for CVE-2022-3976 (1)

Vendor Advisories for CVE-2022-3976 (1)

Other References for CVE-2022-3976 (1)

IV. Related Vulnerabilities

Same product: libiec61850
Same vendor: MZ Automation
Same weakness: CWE-22

V. Comments for CVE-2022-3976

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