MZ Automation libiec61850 up to 1.4 MMS File Services mms_client_files.c filename path traversal

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.5$0-$5k0.00

A vulnerability has been found in MZ Automation libiec61850 up to 1.4 (Automation Software) and classified as critical. This vulnerability affects an unknown function of the file src/mms/iso_mms/client/mms_client_files.c of the component MMS File Services. The manipulation of the argument filename with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is CWE-22. The software uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the software does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was released 11/13/2022 as 10622ba36bb3910c151348f1569f039ecdd8786f. The advisory is shared for download at github.com. This vulnerability was named CVE-2022-3976. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1006.

Upgrading to version 1.5 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 10622ba36bb3910c151348f1569f039ecdd8786f is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Productinfo

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Vendor

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CPE 2.3info

CPE 2.2info

CVSSv3info

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.5

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

NVD Base Score: 8.8
NVD Vector: 🔒

CNA Base Score: 5.5
CNA Vector (VulDB): 🔒

CVSSv2info

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

Exploitinginfo

Class: Path traversal
CWE: CWE-22
ATT&CK: T1006

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: 🔒

Upgrade: libiec61850 1.5
Patch: 10622ba36bb3910c151348f1569f039ecdd8786f

Timelineinfo

11/13/2022 Advisory disclosed
11/13/2022 +0 days CVE reserved
11/13/2022 +0 days VulDB entry created
12/17/2022 +34 days VulDB last update

Sourcesinfo

Advisory: 10622ba36bb3910c151348f1569f039ecdd8786f
Status: Confirmed

CVE: CVE-2022-3976 (🔒)

Entryinfo

Created: 11/13/2022 03:10 PM
Updated: 12/17/2022 03:24 PM
Changes: 11/13/2022 03:10 PM (46), 12/17/2022 03:18 PM (3), 12/17/2022 03:24 PM (21)
Complete: 🔍

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