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    CVE-2021-40647

    In man2html 1.6g, a specific string being read in from a file will overwrite the size parameter in the top chunk of the heap. This at least causes the program to segmentation abort if the heap size parameter isn't aligned correctly. In version before GLIBC version 2.29 and aligned correctly, it allows arbitrary write anywhere in the programs memory.

    Published:Sep 9, 2022
    Last Modified:Nov 21, 2024
    EPS:Sep 9, 2022
    EPSS Score:0.00034
    CVSS Score:5.5

    Affected Products

    Vendor
    Man2html Project
    Product
    Man2html

    Exploits

    https://gist.github.com/untaman/cb58123fe89fc65e3984165db5d40933https://gist.github.com/untaman/cb58123fe89fc65e3984165db5d40933

    Common Weakness Enumeration

    CWE-787 Out-of-bounds Write

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    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