CVE-2020-7559

CVSS V2 Medium 5 CVSS V3 High 7.5
Description
A CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability exists in PLC Simulator on EcoStruxureª Control Expert (now Unity Pro) (all versions) that could cause a crash of the PLC simulator present in EcoStruxureª Control Expert software when receiving a specially crafted request over Modbus.
Overview
  • CVE ID
  • CVE-2020-7559
  • Assigner
  • cybersecurity@se.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2020-11-19T22:15:14
  • Last Modified Date
  • 2022-02-03T13:48:09
Weakness Enumerations
CWE URL
CWE-120 http://cwe.mitre.org/data/definitions/120.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:schneider-electric:ecostruxure_control_expert:*:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:N/I:N/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • PARTIAL
  • Base Score
  • 5
  • Severity
  • MEDIUM
  • Exploitability Score
  • 10
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 7.5
  • Base Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://www.se.com/ww/en/download/document/SEVD-2020-315-07 Patch Product Vendor Advisory
https://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1140 Exploit Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2020-7559
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-7559
History
Created Old Value New Value Data Type Notes
2022-05-10 06:34:36 Added to TrackCVE
2022-12-05 17:08:00 cybersecurity@schneider-electric.com cybersecurity@se.com CVE Assigner updated
2022-12-05 17:08:00 2020-11-19T22:15Z 2020-11-19T22:15:14 CVE Published Date updated
2022-12-05 17:08:00 2022-02-03T13:48:09 CVE Modified Date updated
2022-12-05 17:08:00 Analyzed Vulnerability Status updated