Schneider Electric U.motion Builder up to 1.3.3 smbd Shared Library Upload input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.4$0-$5k0.00

A vulnerability was found in Schneider Electric U.motion Builder up to 1.3.3 (Automation Software) and classified as critical. This issue affects an unknown code of the component smbd. The manipulation as part of a Shared Library leads to a input validation vulnerability (Upload). Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

In Schneider Electric U.motion Builder software versions prior to v1.3.4, malicious clients can upload and cause the smbd server to execute a shared library from a writable share.

The bug was discovered 04/19/2018. The weakness was shared 07/03/2018 (Website). It is possible to read the advisory at schneider-electric.com. The identification of this vulnerability is CVE-2018-7777 since 03/08/2018. The exploitation is known to be easy. The attack may be initiated remotely. A simple authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 75 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 1.3.4 eliminates this vulnerability.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Name: Upload
Class: Input validation / Upload
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

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: U.motion Builder 1.3.4

Timelineinfo

03/08/2018 🔍
04/19/2018 +42 days 🔍
07/03/2018 +74 days 🔍
07/03/2018 +0 days 🔍
07/04/2018 +1 days 🔍
04/03/2023 +1734 days 🔍

Sourcesinfo

Vendor: schneider-electric.com

Advisory: 156184
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-7777 (🔍)

Entryinfo

Created: 07/04/2018 11:37 AM
Updated: 04/03/2023 12:30 PM
Changes: 07/04/2018 11:37 AM (62), 02/25/2020 06:58 AM (2), 04/03/2023 12:30 PM (4)
Complete: 🔍
Cache ID: 44:457:40

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