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    CVE-2021-28040

    An issue was discovered in OSSEC 3.6.0. An uncontrolled recursion vulnerability in os_xml.c occurs when a large number of opening and closing XML tags is used. Because recursion is used in _ReadElem without restriction, an attacker can trigger a segmentation fault once unmapped memory is reached.

    Published:Mar 5, 2021
    Last Modified:Nov 21, 2024
    EPS:Mar 5, 2021
    EPSS Score:0.0028
    CVSS Score:7.5

    Affected Products

    Vendor
    Ossec
    Product
    Ossec

    Exploits

    https://github.com/ossec/ossec-hids/issues/1953https://github.com/ossec/ossec-hids/issues/1953

    Common Weakness Enumeration

    CWE-674 Uncontrolled Recursion

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-230 Serialized Data with Nested Payloads
    CAPEC-231 Oversized Serialized Data Payloads

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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