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    CVE-2019-5178

    An exploitable stack buffer overflow vulnerability vulnerability exists in the iocheckd service ‘I/O-Check’ functionality of WAGO PFC 200 Firmware version 03.02.02(14). An attacker can send a specially crafted packet to trigger the parsing of this cache file. The destination buffer sp+0x440 is overflowed with the call to sprintf() for any hostname values that are greater than 1024-len(‘/etc/config-tools/change_hostname hostname=‘) in length. A hostname value of length 0x3fd will cause the service to crash.

    Published:Mar 11, 2020
    Last Modified:Nov 21, 2024
    EPS:Mar 11, 2020
    EPSS Score:0.00066
    CVSS Score:7.8

    Affected Products

    Vendor
    Wago
    Product
    Pfc200
    Vendor
    Wago
    Product
    Pfc200 Firmware

    Exploits

    https://talosintelligence.com/vulnerability_reports/TALOS-2019-0963https://talosintelligence.com/vulnerability_reports/TALOS-2019-0963

    Common Weakness Enumeration

    CWE-787 Out-of-bounds Write

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High