VDB-126436 · CVE-2018-7798 · BID 105970

Schneider Electric Modicon M221 IPv4 Config data authenticity

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.9$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Schneider Electric Modicon M221. This affects an unknown part of the component IPv4 Config Handler. Executing a manipulation can lead to data authenticity. This vulnerability is handled as CVE-2018-7798. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability has been found in Schneider Electric Modicon M221 (SCADA Software) (affected version not known) and classified as critical. This vulnerability affects some unknown functionality of the component IPv4 Config Handler. The manipulation with an unknown input leads to a data authenticity vulnerability. The CWE definition for the vulnerability is CWE-345. The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

A Insufficient Verification of Data Authenticity (CWE-345) vulnerability exists in the Modicon M221, all versions, which could cause a change of IPv4 configuration (IP address, mask and gateway) when remotely connected to the device.

The bug was discovered 09/27/2018. The weakness was released 11/02/2018 (Website). The advisory is shared for download at schneider-electric.com. This vulnerability was named CVE-2018-7798 since 03/08/2018. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 36 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.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 105970†). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.9
VulDB Meta Temp Score: 7.9

VulDB Base Score: 7.3
VulDB Temp Score: 7.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.2
NVD Vector: 🔍

ADP CISA Base Score: 8.2
ADP CISA 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: Data authenticity
CWE: CWE-345
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 🔍
09/27/2018 +203 days 🔍
11/02/2018 +36 days 🔍
11/02/2018 +0 days 🔍
11/03/2018 +1 days 🔍
11/20/2018 +17 days 🔍
05/29/2026 +2747 days 🔍

Sourcesinfo

Vendor: schneider-electric.com

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

CVE: CVE-2018-7798 (🔍)
GCVE (CVE): GCVE-0-2018-7798
GCVE (VulDB): GCVE-100-126436
SecurityFocus: 105970 - Schneider Electric Modicon M221 CVE-2018-7798 Remote Security Bypass Vulnerability

Entryinfo

Created: 11/03/2018 11:49
Updated: 05/29/2026 21:38
Changes: 11/03/2018 11:49 (58), 04/09/2020 20:26 (4), 05/29/2026 21:38 (28)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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