Modicon M340/Premium/Quantum PLCs/BMXNOR0200 Embedded Web Server cross-site request forgery

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

Summaryinfo

A vulnerability has been found in Modicon M340, Premium, Quantum PLCs and BMXNOR0200 and classified as problematic. The affected element is an unknown function of the component Embedded Web Server. This manipulation causes cross-site request forgery. This vulnerability is registered as CVE-2018-7831. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in Modicon M340, Premium, Quantum PLCs and BMXNOR0200 (SCADA Software) (the affected version unknown). It has been declared as problematic. Affected by this vulnerability is an unknown part of the component Embedded Web Server. The manipulation with an unknown input leads to a cross-site request forgery vulnerability. The CWE definition for the vulnerability is CWE-352. The web application does not, or can not, sufficiently verify whether a well-formed, valid, consistent request was intentionally provided by the user who submitted the request. As an impact it is known to affect integrity. The summary by CVE is:

An Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability exists in the embedded web servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200 allowing an attacker to send a specially crafted URL to a currently authenticated web server user to execute a password change on the web server.

The bug was discovered 11/28/2018. The weakness was published 11/30/2018 (Website). It is possible to read the advisory at schneider-electric.com. This vulnerability is known as CVE-2018-7831 since 03/08/2018. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. 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 2 days. During that time the estimated underground price was around $0-$5k.

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

Similar entries are available at VDB-127371, VDB-127373, VDB-127372 and VDB-127374. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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Vendor

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

VulDB Base Score: 4.3
VulDB Temp Score: 4.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Cross-site request forgery
CWE: CWE-352 / CWE-862 / CWE-863
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

03/08/2018 🔍
11/28/2018 +265 days 🔍
11/30/2018 +2 days 🔍
11/30/2018 +0 days 🔍
12/01/2018 +1 days 🔍
04/16/2020 +502 days 🔍

Sourcesinfo

Advisory: schneider-electric.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-7831 (🔍)
GCVE (CVE): GCVE-0-2018-7831
GCVE (VulDB): GCVE-100-127375
See also: 🔍

Entryinfo

Created: 12/01/2018 23:26
Updated: 04/16/2020 16:50
Changes: 12/01/2018 23:26 (57), 04/16/2020 16:50 (2)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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