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    CVE-2002-0515

    IPFilter 3.4.25 and earlier sets a different TTL when a port is being filtered than when it is not being filtered, which allows remote attackers to identify filtered ports by comparing TTLs.

    Published:Jun 11, 2002
    Last Modified:Apr 16, 2026
    EPS:Jun 11, 2002
    EPSS Score:0.02089
    CVSS Score:5

    Affected Products

    Vendor
    Phildev
    Product
    Ipfilter

    Exploits

    http://www.securityfocus.com/bid/4403http://www.securityfocus.com/bid/4403

    Common Weakness Enumeration

    CWE-203 Observable Discrepancy

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-189 Black Box Reverse Engineering

    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