var-202011-1295
Vulnerability from variot
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. PLC Simulator for EcoStruxure Control Expert and PLC Simulator for Unity Pro Is vulnerable to several vulnerabilities: ‥ * Buffer overflow (CWE-120) - CVE-2020-7559 ‥ * Improper checking in exceptional conditions of the program (CWE-754) - CVE-2020-7538 ‥ * Illegal authentication (CWE-863) - CVE-2020-28211 ‥ * Inappropriate restriction of excessive authentication attempts (CWE-307) - CVE-2020-28212 ‥ * Incomplete integrity verification of downloaded code (CWE-494) - CVE-2020-28213The expected impact depends on each vulnerability, but it may be affected as follows. ‥ * By a remote third party Modbus If you send a specially crafted request via EcoStruxure Control Expert of PLC Simulator Is crashed - CVE-2020-7559 , CVE-2020-7538 ‥ * Authentication is bypassed if the memory is overwritten by a local third party using the debugger - CVE-2020-28211 ‥ * By a remote third party Modbus Brute force attack via brute force executes unauthorized commands - CVE-2020-28212 ‥ * By a remote third party Modbus If a specially crafted request is sent via, an unauthorized command will be executed - CVE-2020-28213
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"data": "A CWE-120: Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027) vulnerability exists in PLC Simulator on EcoStruxure\u00aa Control Expert (now Unity Pro) (all versions) that could cause a crash of the PLC simulator present in EcoStruxure\u00aa Control Expert software when receiving a specially crafted request over Modbus. PLC Simulator for EcoStruxure Control Expert and PLC Simulator for Unity Pro Is vulnerable to several vulnerabilities: \u2025 * Buffer overflow (CWE-120) - CVE-2020-7559 \u2025 * Improper checking in exceptional conditions of the program (CWE-754) - CVE-2020-7538 \u2025 * Illegal authentication (CWE-863) - CVE-2020-28211 \u2025 * Inappropriate restriction of excessive authentication attempts (CWE-307) - CVE-2020-28212 \u2025 * Incomplete integrity verification of downloaded code (CWE-494) - CVE-2020-28213The expected impact depends on each vulnerability, but it may be affected as follows. \u2025 * By a remote third party Modbus If you send a specially crafted request via EcoStruxure Control Expert of PLC Simulator Is crashed - CVE-2020-7559 , CVE-2020-7538 \u2025 * Authentication is bypassed if the memory is overwritten by a local third party using the debugger - CVE-2020-28211 \u2025 * By a remote third party Modbus Brute force attack via brute force executes unauthorized commands - CVE-2020-28212 \u2025 * By a remote third party Modbus If a specially crafted request is sent via, an unauthorized command will be executed - CVE-2020-28213",
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
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