CVE-2017-6030

Common vulnerabilities & exposures (CVE)

CVE database CVE database blogpost Release & EoL database

Published at: - 30-06-2017 05:29

Last modified: - 03-02-2022 02:45

Total changes: - 7

Description

A Predictable Value Range from Previous Values issue was discovered in Schneider Electric Modicon PLCs Modicon M221, firmware versions prior to Version 1.5.0.0, Modicon M241, firmware versions prior to Version 4.0.5.11, and Modicon M251, firmware versions prior to Version 4.0.5.11. The affected products generate insufficiently random TCP initial sequence numbers that may allow an attacker to predict the numbers from previous values. This may allow an attacker to spoof or disrupt TCP connections.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

Low

Attack complexity

Network

Attack vector

Low

Availability

None

Confidentiality

Low

Integrity

None

Privileges required

Unchanged

Scope

None

User interaction

6.5

Base score

3.9

2.5

Exploitability score

Impact score

Verification logic

AND

vendor=schneider-electric AND product=modicon_m241_firmware AND versionEndIncluding=4.0.3.20

vendor=schneider-electric AND product=modicon_m241 AND version=-

AND

vendor=schneider-electric AND product=modicon_m251_firmware AND versionEndIncluding=4.0.3.20

vendor=schneider-electric AND product=modicon_m251 AND version=-

AND

vendor=schneider-electric AND product=modicon_m221_firmware AND versionEndIncluding=1.1.1.5

vendor=schneider-electric AND product=modicon_m221 AND version=-

Reference

https://ics-cert.us-cert.gov/advisories/ICSA-17-089-02
97254-Third Party Advisory, VDB Entry

Keywords

CVE-2017-6030

Common vulnerabilities & exposures (CVE)

Description

Common Vulnerability Scoring System (CVSS)

Verification logic

Reference

NVD

CVE-2017-6030

CVE

Common vulnerabilities & exposures

CVSS

Common vulnerability scoring system

Security

Vulnerabilities

Exposures