VDB-102943 · CVE-2017-6028 · BID 97254

Schneider Electric Modicon M241/Modicon M251 Authentication Password Base64 credentials management

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Schneider Electric Modicon M241 and Modicon M251. Impacted is an unknown function of the component Authentication. This manipulation of the argument Password causes credentials management (Base64). This vulnerability appears as CVE-2017-6028. The attacker needs to be present on the local network. There is no available exploit.

Detailsinfo

A vulnerability classified as critical was found in Schneider Electric Modicon M241 and Modicon M251 (SCADA Software) (affected version unknown). Affected by this vulnerability is an unknown functionality of the component Authentication. The manipulation of the argument password with an unknown input leads to a credentials management vulnerability (Base64). The CWE definition for the vulnerability is CWE-255. As an impact it is known to affect confidentiality. The summary by CVE is:

An Insufficiently Protected Credentials issue was discovered in Schneider Electric Modicon PLCs Modicon M241, all firmware versions, and Modicon M251, all firmware versions. Log-in credentials are sent over the network with Base64 encoding leaving them susceptible to sniffing. Sniffed credentials could then be used to log into the web application.

The bug was discovered 03/30/2017. The weakness was presented 06/30/2017 (Website). It is possible to read the advisory at ics-cert.us-cert.gov. This vulnerability is known as CVE-2017-6028 since 02/16/2017. The attack can only be done within the local network. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1552 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 91 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 97254†). See VDB-102942 and VDB-102944 for similar entries. Be aware that VulDB is the high quality 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: 7.1
VulDB Meta Temp Score: 7.1

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

NVD Base Score: 9.8
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

Name: Base64
Class: Credentials management / Base64
CWE: CWE-255
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

02/16/2017 🔍
03/30/2017 +42 days 🔍
03/30/2017 +0 days 🔍
06/29/2017 +91 days 🔍
06/30/2017 +1 days 🔍
06/30/2017 +0 days 🔍
12/30/2020 +1279 days 🔍

Sourcesinfo

Vendor: schneider-electric.com

Advisory: ics-cert.us-cert.gov
Researcher: David Formby, Raheem Beyah
Status: Not defined

CVE: CVE-2017-6028 (🔍)
GCVE (CVE): GCVE-0-2017-6028
GCVE (VulDB): GCVE-100-102943
SecurityFocus: 97254 - Multiple Schneider Electric Modicon Products Weak Cryptography Multiple Security Weaknesses

See also: 🔍

Entryinfo

Created: 06/30/2017 10:49
Updated: 12/30/2020 10:16
Changes: 06/30/2017 10:49 (62), 10/21/2019 12:56 (3), 12/30/2020 10:16 (3)
Complete: 🔍
Cache ID: 216::103

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

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