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    CVE-2020-7461

    In FreeBSD 12.1-STABLE before r365010, 11.4-STABLE before r365011, 12.1-RELEASE before p9, 11.4-RELEASE before p3, and 11.3-RELEASE before p13, dhclient(8) fails to handle certain malformed input related to handling of DHCP option 119 resulting a heap overflow. The heap overflow could in principle be exploited to achieve remote code execution. The affected process runs with reduced privileges in a Capsicum sandbox, limiting the immediate impact of an exploit.

    Published:Mar 26, 2021
    Last Modified:Nov 21, 2024
    EPS:Mar 26, 2021
    EPSS Score:0.48533
    CVSS Score:7.3

    Affected Products

    Vendor
    Freebsd
    Product
    Freebsd
    Vendor
    Siemens
    Product
    Simatic Rf350m
    Vendor
    Siemens
    Product
    Simatic Rf350m Firmware
    Vendor
    Siemens
    Product
    Simatic Rf650m
    Vendor
    Siemens
    Product
    Simatic Rf650m Firmware

    Exploits

    https://github.com/0xkol/freebsd-dhclient-pochttps://github.com/knqyf263/CVE-2020-7461

    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